42297140 has 12 divisors (see below), whose sum is σ = 88824036. Its totient is φ = 16918848.

The previous prime is 42297131. The next prime is 42297169. The reversal of 42297140 is 4179224.

It can be written as a sum of positive squares in 2 ways, for example, as 23600164 + 18696976 = 4858^2 + 4324^2 .

It is a congruent number.

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, 1057409 + ... + 1057448.

It is an arithmetic number, because the mean of its divisors is an integer number (7402003).

Almost surely, 2^42297140 is an apocalyptic number.

It is an amenable number.

42297140 is an abundant number, since it is smaller than the sum of its proper divisors (46526896).

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

42297140 is a wasteful number, since it uses less digits than its factorization.

42297140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2114866 (or 2114864 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 42297140 is about 6503.6251429491. The cubic root of 42297140 is about 348.4204742698.

The spelling of 42297140 in words is "forty-two million, two hundred ninety-seven thousand, one hundred forty".