7045420905 has 40 divisors (see below), whose sum is σ = 12635815104. Its totient is φ = 3755700000.

The previous prime is 7045420861. The next prime is 7045420939. The reversal of 7045420905 is 5090245407.

It is not a de Polignac number, because 7045420905 - 2⁷ = 7045420777 is a prime.

It is a super-2 number, since 2×7045420905² = 99275911457222038050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 7045420905.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1313980 + ... + 1319330.

Almost surely, 2^7045420905 is an apocalyptic number.

It is an amenable number.

7045420905 is a deficient number, since it is larger than the sum of its proper divisors (5590394199).

7045420905 is a wasteful number, since it uses less digits than its factorization.

7045420905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8619 (or 8610 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 7045420905 is about 83937.0055756101. The cubic root of 7045420905 is about 1917.0597452487.

The spelling of 7045420905 in words is "seven billion, forty-five million, four hundred twenty thousand, nine hundred five".