42620505 has 32 divisors (see below), whose sum is σ = 70975488. Its totient is φ = 21816000.

The previous prime is 42620497. The next prime is 42620507. The reversal of 42620505 is 50502624.

It is not a de Polignac number, because 42620505 - 2³ = 42620497 is a prime.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (42620507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69912 + ... + 70518.

It is an arithmetic number, because the mean of its divisors is an integer number (2217984).

Almost surely, 2^42620505 is an apocalyptic number.

It is an amenable number.

42620505 is a deficient number, since it is larger than the sum of its proper divisors (28354983).

42620505 is a wasteful number, since it uses less digits than its factorization.

42620505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 42620505 is about 6528.4381746326. The cubic root of 42620505 is about 349.3061218882.

The spelling of 42620505 in words is "forty-two million, six hundred twenty thousand, five hundred five".