1042485421 has 4 divisors (see below), whose sum is σ = 1066729312. Its totient is φ = 1018241532.

The previous prime is 1042485413. The next prime is 1042485443. The reversal of 1042485421 is 1245842401.

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.

It is a cyclic number.

It is not a de Polignac number, because 1042485421 - 2³ = 1042485413 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 (1042485401) 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, 12121881 + ... + 12121966.

It is an arithmetic number, because the mean of its divisors is an integer number (266682328).

Almost surely, 2^1042485421 is an apocalyptic number.

It is an amenable number.

1042485421 is a deficient number, since it is larger than the sum of its proper divisors (24243891).

1042485421 is an equidigital number, since it uses as much as digits as its factorization.

1042485421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24243890.

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 1042485421 is about 32287.5428145283. The cubic root of 1042485421 is about 1013.9658539336.

The spelling of 1042485421 in words is "one billion, forty-two million, four hundred eighty-five thousand, four hundred twenty-one".