340040142 has 144 divisors (see below), whose sum is σ = 862334928. Its totient is φ = 96180480.

The previous prime is 340040053. The next prime is 340040143. The reversal of 340040142 is 241040043.

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

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340040143) 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 71 ways as a sum of consecutive naturals, for example, 5075193 + ... + 5075259.

It is an arithmetic number, because the mean of its divisors is an integer number (5988437).

Almost surely, 2^340040142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 340040142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (431167464).

340040142 is an abundant number, since it is smaller than the sum of its proper divisors (522294786).

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

340040142 is a wasteful number, since it uses less digits than its factorization.

340040142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175 (or 149 counting only the distinct ones).

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

The square root of 340040142 is about 18440.1773852639. The cubic root of 340040142 is about 697.9806714899.

Adding to 340040142 its reverse (241040043), we get a palindrome (581080185).

Subtracting from 340040142 its reverse (241040043), we obtain a palindrome (99000099).

The spelling of 340040142 in words is "three hundred forty million, forty thousand, one hundred forty-two".