400135142000 has 120 divisors (see below), whose sum is σ = 1063480484976. Its totient is φ = 145503600000.

The previous prime is 400135141999. The next prime is 400135142027. The reversal of 400135142000 is 241531004.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 584726 + ... + 1068725.

Almost surely, 2^400135142000 is an apocalyptic number.

400135142000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

400135142000 is an abundant number, since it is smaller than the sum of its proper divisors (663345342976).

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

400135142000 is a wasteful number, since it uses less digits than its factorization.

400135142000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1653496 (or 1653469 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

Adding to 400135142000 its reverse (241531004), we get a palindrome (400376673004).

The spelling of 400135142000 in words is "four hundred billion, one hundred thirty-five million, one hundred forty-two thousand".