400412342 has 16 divisors (see below), whose sum is σ = 657947664. Its totient is φ = 181248000.

The previous prime is 400412321. The next prime is 400412347. The reversal of 400412342 is 243214004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400412347) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32459 + ... + 43062.

It is an arithmetic number, because the mean of its divisors is an integer number (41121729).

Almost surely, 2^400412342 is an apocalyptic number.

400412342 is a deficient number, since it is larger than the sum of its proper divisors (257535322).

400412342 is a wasteful number, since it uses less digits than its factorization.

400412342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75775.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 400412342 is about 20010.3058947134. The cubic root of 400412342 is about 737.0593929332.

Adding to 400412342 its reverse (243214004), we get a palindrome (643626346).

The spelling of 400412342 in words is "four hundred million, four hundred twelve thousand, three hundred forty-two".