42097668 has 12 divisors (see below), whose sum is σ = 98227920. Its totient is φ = 14032552.

The previous prime is 42097651. The next prime is 42097691. The reversal of 42097668 is 86679024.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1754058 + ... + 1754081.

It is an arithmetic number, because the mean of its divisors is an integer number (8185660).

Almost surely, 2^42097668 is an apocalyptic number.

It is an amenable number.

42097668 is an abundant number, since it is smaller than the sum of its proper divisors (56130252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42097668 is a wasteful number, since it uses less digits than its factorization.

42097668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3508146 (or 3508144 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 42097668 is about 6488.2715726147. The cubic root of 42097668 is about 347.8718976247.

The spelling of 42097668 in words is "forty-two million, ninety-seven thousand, six hundred sixty-eight".