45442739 has 8 divisors (see below), whose sum is σ = 47102160. Its totient is φ = 43789536.

The previous prime is 45442729. The next prime is 45442741. The reversal of 45442739 is 93724454.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 45442739 - 2⁴ = 45442723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45442729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17429 + ... + 19865.

It is an arithmetic number, because the mean of its divisors is an integer number (5887770).

Almost surely, 2^45442739 is an apocalyptic number.

45442739 is a deficient number, since it is larger than the sum of its proper divisors (1659421).

45442739 is a wasteful number, since it uses less digits than its factorization.

45442739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3109.

The product of its digits is 120960, while the sum is 38.

The square root of 45442739 is about 6741.1229776648. The cubic root of 45442739 is about 356.8520259143.

The spelling of 45442739 in words is "forty-five million, four hundred forty-two thousand, seven hundred thirty-nine".