1045029621 has 16 divisors (see below), whose sum is σ = 1468072640. Its totient is φ = 659404800.

The previous prime is 1045029611. The next prime is 1045029637. The reversal of 1045029621 is 1269205401.

It is not a de Polignac number, because 1045029621 - 2⁵ = 1045029589 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 (1045029611) 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, 57771 + ... + 73671.

It is an arithmetic number, because the mean of its divisors is an integer number (91754540).

Almost surely, 2^1045029621 is an apocalyptic number.

It is an amenable number.

1045029621 is a deficient number, since it is larger than the sum of its proper divisors (423043019).

1045029621 is a wasteful number, since it uses less digits than its factorization.

1045029621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17076.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 1045029621 is about 32326.9179013404. The cubic root of 1045029621 is about 1014.7900496779.

The spelling of 1045029621 in words is "one billion, forty-five million, twenty-nine thousand, six hundred twenty-one".