400420124210500 has 96 divisors (see below), whose sum is σ = 929148015519360. Its totient is φ = 150320038377600.

The previous prime is 400420124210489. The next prime is 400420124210507. The reversal of 400420124210500 is 5012421024004.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (400420124210507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 195943719 + ... + 197976718.

It is an arithmetic number, because the mean of its divisors is an integer number (9678625161660).

Almost surely, 2^{400420124210500} is an apocalyptic number.

It is an amenable number.

400420124210500 is an abundant number, since it is smaller than the sum of its proper divisors (528727891308860).

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

400420124210500 is a wasteful number, since it uses less digits than its factorization.

400420124210500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393920582 (or 393920570 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 400420124210500 its reverse (5012421024004), we get a palindrome (405432545234504).

The spelling of 400420124210500 in words is "four hundred trillion, four hundred twenty billion, one hundred twenty-four million, two hundred ten thousand, five hundred".