42651505 has 32 divisors (see below), whose sum is σ = 57996288. Its totient is φ = 29894400.

The previous prime is 42651503. The next prime is 42651509. The reversal of 42651505 is 50515624.

It is not a de Polignac number, because 42651505 - 2¹ = 42651503 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42651503) 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, 122742 + ... + 123088.

It is an arithmetic number, because the mean of its divisors is an integer number (1812384).

Almost surely, 2^42651505 is an apocalyptic number.

It is an amenable number.

42651505 is a deficient number, since it is larger than the sum of its proper divisors (15344783).

42651505 is a wasteful number, since it uses less digits than its factorization.

42651505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457.

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 42651505 is about 6530.8119709574. The cubic root of 42651505 is about 349.3907905664.

The spelling of 42651505 in words is "forty-two million, six hundred fifty-one thousand, five hundred five".