45021402 has 12 divisors (see below), whose sum is σ = 97546410. Its totient is φ = 15007128.

The previous prime is 45021401. The next prime is 45021407. The reversal of 45021402 is 20412054.

45021402 is a `hidden beast` number, since 450 + 214 + 0 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 44635761 + 385641 = 6681^2 + 621^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 2501189 = 45021402 / (4 + 5 + 0 + 2 + 1 + 4 + 0 + 2).

It is not an unprimeable number, because it can be changed into a prime (45021401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1250577 + ... + 1250612.

Almost surely, 2^45021402 is an apocalyptic number.

45021402 is an abundant number, since it is smaller than the sum of its proper divisors (52525008).

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

45021402 is a wasteful number, since it uses less digits than its factorization.

45021402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2501197 (or 2501194 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 45021402 is about 6709.7989537690. The cubic root of 45021402 is about 355.7457101271.

Adding to 45021402 its reverse (20412054), we get a palindrome (65433456).

The spelling of 45021402 in words is "forty-five million, twenty-one thousand, four hundred two".