45702421 has 4 divisors (see below), whose sum is σ = 46765312. Its totient is φ = 44639532.

The previous prime is 45702379. The next prime is 45702427. The reversal of 45702421 is 12420754.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12420754 = 2 ⋅6210377.

It is a cyclic number.

It is not a de Polignac number, because 45702421 - 2¹⁵ = 45669653 is a prime.

It is a super-2 number, since 2×45702421² = 4177422570522482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45702427) 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, 531381 + ... + 531466.

It is an arithmetic number, because the mean of its divisors is an integer number (11691328).

Almost surely, 2^45702421 is an apocalyptic number.

It is an amenable number.

45702421 is a deficient number, since it is larger than the sum of its proper divisors (1062891).

45702421 is a wasteful number, since it uses less digits than its factorization.

45702421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062890.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 45702421 is about 6760.3565734360. The cubic root of 45702421 is about 357.5304774577.

The spelling of 45702421 in words is "forty-five million, seven hundred two thousand, four hundred twenty-one".