42620545 has 8 divisors (see below), whose sum is σ = 55794240. Its totient is φ = 30996720.

The previous prime is 42620537. The next prime is 42620551. The reversal of 42620545 is 54502624.

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

It is not a de Polignac number, because 42620545 - 2³ = 42620537 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 387405 + ... + 387514.

It is an arithmetic number, because the mean of its divisors is an integer number (6974280).

Almost surely, 2^42620545 is an apocalyptic number.

It is an amenable number.

42620545 is a deficient number, since it is larger than the sum of its proper divisors (13173695).

42620545 is a wasteful number, since it uses less digits than its factorization.

42620545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774935.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 42620545 is about 6528.4412381517. The cubic root of 42620545 is about 349.3062311645.

The spelling of 42620545 in words is "forty-two million, six hundred twenty thousand, five hundred forty-five".