45720423 has 16 divisors (see below), whose sum is σ = 77410560. Its totient is φ = 26125848.

The previous prime is 45720407. The next prime is 45720439. The reversal of 45720423 is 32402754.

45720423 is a `hidden beast` number, since 457 + 204 + 2 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (45720407) and next prime (45720439).

It is not a de Polignac number, because 45720423 - 2⁴ = 45720407 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45720473) 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, 120765 + ... + 121142.

It is an arithmetic number, because the mean of its divisors is an integer number (4838160).

Almost surely, 2^45720423 is an apocalyptic number.

45720423 is a deficient number, since it is larger than the sum of its proper divisors (31690137).

45720423 is a wasteful number, since it uses less digits than its factorization.

45720423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241923 (or 241917 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 45720423 is about 6761.6878809954. The cubic root of 45720423 is about 357.5774145683.

The spelling of 45720423 in words is "forty-five million, seven hundred twenty thousand, four hundred twenty-three".