201657126 has 32 divisors (see below), whose sum is σ = 455155200. Its totient is φ = 59000480.

The previous prime is 201657109. The next prime is 201657133. The reversal of 201657126 is 621756102.

It is a junction number, because it is equal to n+sod(n) for n = 201657093 and 201657102.

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, 50766 + ... + 54593.

It is an arithmetic number, because the mean of its divisors is an integer number (14223600).

Almost surely, 2^201657126 is an apocalyptic number.

201657126 is an abundant number, since it is smaller than the sum of its proper divisors (253498074).

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

201657126 is a wasteful number, since it uses less digits than its factorization.

201657126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105404.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 201657126 is about 14200.6030153652. The cubic root of 201657126 is about 586.4142624769.

The spelling of 201657126 in words is "two hundred one million, six hundred fifty-seven thousand, one hundred twenty-six".