1042360221 has 16 divisors (see below), whose sum is σ = 1588826624. Its totient is φ = 595458864.

The previous prime is 1042360181. The next prime is 1042360223. The reversal of 1042360221 is 1220632401.

It is a de Polignac number, because none of the positive numbers 2^k-1042360221 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042360223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107646 + ... + 116928.

It is an arithmetic number, because the mean of its divisors is an integer number (99301664).

Almost surely, 2^1042360221 is an apocalyptic number.

It is an amenable number.

1042360221 is a deficient number, since it is larger than the sum of its proper divisors (546466403).

1042360221 is an equidigital number, since it uses as much as digits as its factorization.

1042360221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14640.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 1042360221 is about 32285.6039280668. The cubic root of 1042360221 is about 1013.9252606857.

Adding to 1042360221 its reverse (1220632401), we get a palindrome (2262992622).

The spelling of 1042360221 in words is "one billion, forty-two million, three hundred sixty thousand, two hundred twenty-one".