1040477021 has 4 divisors (see below), whose sum is σ = 1040541600. Its totient is φ = 1040412444.

The previous prime is 1040477003. The next prime is 1040477029. The reversal of 1040477021 is 1207740401.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1040477021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1040477029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13970 + ... + 47708.

It is an arithmetic number, because the mean of its divisors is an integer number (260135400).

Almost surely, 2^1040477021 is an apocalyptic number.

It is an amenable number.

1040477021 is a deficient number, since it is larger than the sum of its proper divisors (64579).

1040477021 is an equidigital number, since it uses as much as digits as its factorization.

1040477021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64578.

The product of its (nonzero) digits is 1568, while the sum is 26.

The square root of 1040477021 is about 32256.4260419533. The cubic root of 1040477021 is about 1013.3142834480.

The spelling of 1040477021 in words is "one billion, forty million, four hundred seventy-seven thousand, twenty-one".