2129157 has 6 divisors (see below), whose sum is σ = 3075462. Its totient is φ = 1419432.

The previous prime is 2129123. The next prime is 2129161. The reversal of 2129157 is 7519212.

It can be written as a sum of positive squares in only one way, i.e., 1758276 + 370881 = 1326^2 + 609^2 .

It is not a de Polignac number, because 2129157 - 2¹⁸ = 1867013 is a prime.

It is a zygodrome in base 3.

It is a self number, because there is not a number n which added to its sum of digits gives 2129157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2129107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 118278 + ... + 118295.

It is an arithmetic number, because the mean of its divisors is an integer number (512577).

2^2129157 is an apocalyptic number.

It is an amenable number.

2129157 is a deficient number, since it is larger than the sum of its proper divisors (946305).

2129157 is a wasteful number, since it uses less digits than its factorization.

2129157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236579 (or 236576 counting only the distinct ones).

The product of its digits is 1260, while the sum is 27.

The square root of 2129157 is about 1459.1631163102. The cubic root of 2129157 is about 128.6478587893.

The spelling of 2129157 in words is "two million, one hundred twenty-nine thousand, one hundred fifty-seven".