45420239 has 8 divisors (see below), whose sum is σ = 48924672. Its totient is φ = 42043320.

The previous prime is 45420229. The next prime is 45420247. The reversal of 45420239 is 93202454.

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

It is a cyclic number.

It is not a de Polignac number, because 45420239 - 2⁴ = 45420223 is a prime.

It is a super-3 number, since 3×45420239³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45420229) 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, 31139 + ... + 32564.

It is an arithmetic number, because the mean of its divisors is an integer number (6115584).

Almost surely, 2^45420239 is an apocalyptic number.

45420239 is a deficient number, since it is larger than the sum of its proper divisors (3504433).

45420239 is a wasteful number, since it uses less digits than its factorization.

45420239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63757.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 45420239 is about 6739.4539096280. The cubic root of 45420239 is about 356.7931203093.

The spelling of 45420239 in words is "forty-five million, four hundred twenty thousand, two hundred thirty-nine".