1045020972 has 12 divisors (see below), whose sum is σ = 2438382296. Its totient is φ = 348340320.

The previous prime is 1045020967. The next prime is 1045020973. The reversal of 1045020972 is 2790205401.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (1045020973) 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, 43542529 + ... + 43542552.

Almost surely, 2^1045020972 is an apocalyptic number.

1045020972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1045020972 is an abundant number, since it is smaller than the sum of its proper divisors (1393361324).

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

1045020972 is a wasteful number, since it uses less digits than its factorization.

1045020972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87085088 (or 87085086 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 1045020972 is about 32326.7841270981. The cubic root of 1045020972 is about 1014.7872500943.

The spelling of 1045020972 in words is "one billion, forty-five million, twenty thousand, nine hundred seventy-two".