140234004 has 60 divisors (see below), whose sum is σ = 368190900. Its totient is φ = 46541952.

The previous prime is 140233999. The next prime is 140234009. The reversal of 140234004 is 400432041.

It is an interprime number because it is at equal distance from previous prime (140233999) and next prime (140234009).

It can be written as a sum of positive squares in 2 ways, for example, as 77792400 + 62441604 = 8820^2 + 7902^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140234009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 86352 + ... + 87960.

It is an arithmetic number, because the mean of its divisors is an integer number (6136515).

Almost surely, 2^140234004 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 140234004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184095450).

140234004 is an abundant number, since it is smaller than the sum of its proper divisors (227956896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

140234004 is a wasteful number, since it uses less digits than its factorization.

140234004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1894 (or 1883 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 140234004 is about 11842.0439114200. The cubic root of 140234004 is about 519.5385501950.

Adding to 140234004 its reverse (400432041), we get a palindrome (540666045).

The spelling of 140234004 in words is "one hundred forty million, two hundred thirty-four thousand, four".