2123957 has 8 divisors (see below), whose sum is σ = 2328480. Its totient is φ = 1921360.

The previous prime is 2123939. The next prime is 2123969. The reversal of 2123957 is 7593212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2123957 - 2⁸ = 2123701 is a prime.

It is a super-2 number, since 2×2123957² = 9022386675698, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2 + 1 + 2¹⁵ + 3⁹ + 9³ + 5⁹ + 7⁶ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2894 + ... + 3552.

It is an arithmetic number, because the mean of its divisors is an integer number (291060).

2^2123957 is an apocalyptic number.

It is an amenable number.

2123957 is a deficient number, since it is larger than the sum of its proper divisors (204523).

2123957 is a wasteful number, since it uses less digits than its factorization.

2123957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963.

The product of its digits is 3780, while the sum is 29.

The square root of 2123957 is about 1457.3801837544. The cubic root of 2123957 is about 128.5430419989.

The spelling of 2123957 in words is "two million, one hundred twenty-three thousand, nine hundred fifty-seven".