501042100 has 36 divisors (see below), whose sum is σ = 1170899884. Its totient is φ = 184999680.

The previous prime is 501042083. The next prime is 501042127. The reversal of 501042100 is 1240105.

It can be written as a sum of positive squares in 6 ways, for example, as 47692836 + 453349264 = 6906^2 + 21292^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

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, 191409 + ... + 194008.

Almost surely, 2^501042100 is an apocalyptic number.

501042100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

501042100 is an abundant number, since it is smaller than the sum of its proper divisors (669857784).

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

501042100 is a wasteful number, since it uses less digits than its factorization.

501042100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385444 (or 385437 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 501042100 is about 22383.9697104870. The cubic root of 501042100 is about 794.2515535561.

Adding to 501042100 its reverse (1240105), we get a palindrome (502282205).

The spelling of 501042100 in words is "five hundred one million, forty-two thousand, one hundred".