400242140432 has 40 divisors (see below), whose sum is σ = 789824864640. Its totient is φ = 196445658240.

The previous prime is 400242140399. The next prime is 400242140453. The reversal of 400242140432 is 234041242004.

It is a happy number.

It is a super-3 number, since 3×400242140432³ (a number of 36 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 696494 + ... + 1133837.

It is an arithmetic number, because the mean of its divisors is an integer number (19745621616).

Almost surely, 2^400242140432 is an apocalyptic number.

It is an amenable number.

400242140432 is a deficient number, since it is larger than the sum of its proper divisors (389582724208).

400242140432 is a wasteful number, since it uses less digits than its factorization.

400242140432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1830591 (or 1830585 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 400242140432 its reverse (234041242004), we get a palindrome (634283382436).

The spelling of 400242140432 in words is "four hundred billion, two hundred forty-two million, one hundred forty thousand, four hundred thirty-two".