400112142 has 16 divisors (see below), whose sum is σ = 800854992. Its totient is φ = 133265600.

The previous prime is 400112131. The next prime is 400112143. The reversal of 400112142 is 241211004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400112143) 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, 17823 + ... + 33434.

It is an arithmetic number, because the mean of its divisors is an integer number (50053437).

Almost surely, 2^400112142 is an apocalyptic number.

400112142 is an abundant number, since it is smaller than the sum of its proper divisors (400742850).

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

400112142 is a wasteful number, since it uses less digits than its factorization.

400112142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52563.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 400112142 is about 20002.8033535302. The cubic root of 400112142 is about 736.8751490711.

Adding to 400112142 its reverse (241211004), we get a palindrome (641323146).

The spelling of 400112142 in words is "four hundred million, one hundred twelve thousand, one hundred forty-two".