42561701 has 32 divisors (see below), whose sum is σ = 54700800. Its totient is φ = 32223744.

The previous prime is 42561697. The next prime is 42561709. The reversal of 42561701 is 10716524.

It is not a de Polignac number, because 42561701 - 2² = 42561697 is a prime.

It is a super-2 number, since 2×42561701² = 3622996784026802, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42561709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 285575 + ... + 285723.

It is an arithmetic number, because the mean of its divisors is an integer number (1709400).

Almost surely, 2^42561701 is an apocalyptic number.

It is an amenable number.

42561701 is a deficient number, since it is larger than the sum of its proper divisors (12139099).

42561701 is a wasteful number, since it uses less digits than its factorization.

42561701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 42561701 is about 6523.9329395695. The cubic root of 42561701 is about 349.1454007272.

It can be divided in two parts, 425 and 61701, that added together give a palindrome (62126).

The spelling of 42561701 in words is "forty-two million, five hundred sixty-one thousand, seven hundred one".