45942421 has 4 divisors (see below), whose sum is σ = 52505632. Its totient is φ = 39379212.

The previous prime is 45942383. The next prime is 45942433. The reversal of 45942421 is 12424954.

45942421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 45942421 - 2¹¹ = 45940373 is a prime.

It is a super-2 number, since 2×45942421² = 4221412094682482, 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 (45942461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3281595 + ... + 3281608.

It is an arithmetic number, because the mean of its divisors is an integer number (13126408).

Almost surely, 2^45942421 is an apocalyptic number.

It is an amenable number.

45942421 is a deficient number, since it is larger than the sum of its proper divisors (6563211).

45942421 is an equidigital number, since it uses as much as digits as its factorization.

45942421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6563210.

The product of its digits is 11520, while the sum is 31.

The square root of 45942421 is about 6778.0838737803. The cubic root of 45942421 is about 358.1552259036.

The spelling of 45942421 in words is "forty-five million, nine hundred forty-two thousand, four hundred twenty-one".