42297888 has 96 divisors (see below), whose sum is σ = 116992512. Its totient is φ = 13363200.

The previous prime is 42297859. The next prime is 42297889. The reversal of 42297888 is 88879224.

42297888 = T₁₁₄₇ + T₁₁₄₈ + ... + T₁₂₀₇.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×42297888² = 3578222658521088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42297889) 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, 181420 + ... + 181652.

It is an arithmetic number, because the mean of its divisors is an integer number (1218672).

Almost surely, 2^42297888 is an apocalyptic number.

42297888 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42297888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58496256).

42297888 is an abundant number, since it is smaller than the sum of its proper divisors (74694624).

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

42297888 is a wasteful number, since it uses less digits than its factorization.

42297888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338 (or 330 counting only the distinct ones).

The product of its digits is 516096, while the sum is 48.

The square root of 42297888 is about 6503.6826490843. The cubic root of 42297888 is about 348.4225281280.

The spelling of 42297888 in words is "forty-two million, two hundred ninety-seven thousand, eight hundred eighty-eight".