400412123142 has 32 divisors (see below), whose sum is σ = 804888548352. Its totient is φ = 132794937504.

The previous prime is 400412123119. The next prime is 400412123143. The reversal of 400412123142 is 241321214004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400412123143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 793483 + ... + 1196009.

It is an arithmetic number, because the mean of its divisors is an integer number (25152767136).

Almost surely, 2^400412123142 is an apocalyptic number.

400412123142 is an abundant number, since it is smaller than the sum of its proper divisors (404476425210).

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

400412123142 is a wasteful number, since it uses less digits than its factorization.

400412123142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403372.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 400412123142 its reverse (241321214004), we get a palindrome (641733337146).

The spelling of 400412123142 in words is "four hundred billion, four hundred twelve million, one hundred twenty-three thousand, one hundred forty-two".