40257140 has 48 divisors (see below), whose sum is σ = 105404544. Its totient is φ = 12547200.

The previous prime is 40257109. The next prime is 40257163. The reversal of 40257140 is 4175204.

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, 11531 + ... + 14610.

It is an arithmetic number, because the mean of its divisors is an integer number (2195928).

Almost surely, 2^40257140 is an apocalyptic number.

It is an amenable number.

40257140 is an abundant number, since it is smaller than the sum of its proper divisors (65147404).

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

40257140 is a wasteful number, since it uses less digits than its factorization.

40257140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26168 (or 26166 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 40257140 is about 6344.8514561020. The cubic root of 40257140 is about 342.7264632601.

The spelling of 40257140 in words is "forty million, two hundred fifty-seven thousand, one hundred forty".