140405004 has 36 divisors (see below), whose sum is σ = 355393584. Its totient is φ = 46738272.

The previous prime is 140404997. The next prime is 140405017. The reversal of 140405004 is 400504041.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29734 + ... + 34130.

It is an arithmetic number, because the mean of its divisors is an integer number (9872044).

Almost surely, 2^140405004 is an apocalyptic number.

It is an amenable number.

140405004 is an abundant number, since it is smaller than the sum of its proper divisors (214988580).

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

140405004 is a wasteful number, since it uses less digits than its factorization.

140405004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5294 (or 5289 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 140405004 is about 11849.2617491555. The cubic root of 140405004 is about 519.7496378612.

Adding to 140405004 its reverse (400504041), we get a palindrome (540909045).

It can be divided in two parts, 14040 and 5004, that added together give a square (19044 = 138²).

The spelling of 140405004 in words is "one hundred forty million, four hundred five thousand, four".