1045002120 has 64 divisors (see below), whose sum is σ = 3137149440. Its totient is φ = 278476800.

The previous prime is 1045002107. The next prime is 1045002173. The reversal of 1045002120 is 212005401.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1045002120.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 309240 + ... + 312600.

It is an arithmetic number, because the mean of its divisors is an integer number (49017960).

Almost surely, 2^1045002120 is an apocalyptic number.

1045002120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1045002120 is an abundant number, since it is smaller than the sum of its proper divisors (2092147320).

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

1045002120 is a wasteful number, since it uses less digits than its factorization.

1045002120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5966 (or 5962 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 15.

The square root of 1045002120 is about 32326.4925409485. The cubic root of 1045002120 is about 1014.7811478613.

Adding to 1045002120 its reverse (212005401), we get a palindrome (1257007521).

The spelling of 1045002120 in words is "one billion, forty-five million, two thousand, one hundred twenty".