405140100 has 36 divisors (see below), whose sum is σ = 1172206224. Its totient is φ = 108037280.

The previous prime is 405140069. The next prime is 405140119. The reversal of 405140100 is 1041504.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 405140100.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 674934 + ... + 675533.

It is an arithmetic number, because the mean of its divisors is an integer number (32561284).

Almost surely, 2^405140100 is an apocalyptic number.

It is an amenable number.

405140100 is an abundant number, since it is smaller than the sum of its proper divisors (767066124).

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

405140100 is a wasteful number, since it uses less digits than its factorization.

405140100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350484 (or 1350477 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 405140100 is about 20128.0923090093. The cubic root of 405140100 is about 739.9489251333.

Adding to 405140100 its reverse (1041504), we get a palindrome (406181604).

The spelling of 405140100 in words is "four hundred five million, one hundred forty thousand, one hundred".