42425661 has 16 divisors (see below), whose sum is σ = 57798720. Its totient is φ = 27672960.

The previous prime is 42425657. The next prime is 42425671. The reversal of 42425661 is 16652424.

It is not a de Polignac number, because 42425661 - 2² = 42425657 is a prime.

It is a super-2 number, since 2×42425661² = 3599873422573842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42425671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49311 + ... + 50163.

It is an arithmetic number, because the mean of its divisors is an integer number (3612420).

Almost surely, 2^42425661 is an apocalyptic number.

It is an amenable number.

42425661 is a deficient number, since it is larger than the sum of its proper divisors (15373059).

42425661 is a wasteful number, since it uses less digits than its factorization.

42425661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196.

The product of its digits is 11520, while the sum is 30.

The square root of 42425661 is about 6513.4983687723. The cubic root of 42425661 is about 348.7730124458.

The spelling of 42425661 in words is "forty-two million, four hundred twenty-five thousand, six hundred sixty-one".