42097908 has 48 divisors (see below), whose sum is σ = 102473280. Its totient is φ = 13434624.

The previous prime is 42097883. The next prime is 42097919. The reversal of 42097908 is 80979024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47235 + ... + 48117.

It is an arithmetic number, because the mean of its divisors is an integer number (2134860).

Almost surely, 2^42097908 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42097908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51236640).

42097908 is an abundant number, since it is smaller than the sum of its proper divisors (60375372).

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

42097908 is a wasteful number, since it uses less digits than its factorization.

42097908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1056 (or 1054 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 42097908 is about 6488.2900674985. The cubic root of 42097908 is about 347.8725586993.

The spelling of 42097908 in words is "forty-two million, ninety-seven thousand, nine hundred eight".