201257040 has 40 divisors (see below), whose sum is σ = 623897568. Its totient is φ = 53668480.

The previous prime is 201257011. The next prime is 201257057. The reversal of 201257040 is 40752102.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×201257040² = 81008792299123200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201256998 and 201257016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 419046 + ... + 419525.

Almost surely, 2^201257040 is an apocalyptic number.

201257040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201257040 is an abundant number, since it is smaller than the sum of its proper divisors (422640528).

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

201257040 is a wasteful number, since it uses less digits than its factorization.

201257040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838587 (or 838581 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 201257040 is about 14186.5090843378. The cubic root of 201257040 is about 586.0261921066.

The spelling of 201257040 in words is "two hundred one million, two hundred fifty-seven thousand, forty".