2129357 has 2 divisors, whose sum is σ = 2129358. Its totient is φ = 2129356.

The previous prime is 2129353. The next prime is 2129371. The reversal of 2129357 is 7539212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2128681 + 676 = 1459^2 + 26^2 .

It is a cyclic number.

It is not a de Polignac number, because 2129357 - 2² = 2129353 is a prime.

It is a super-2 number, since 2×2129357² = 9068322466898, which contains 22 as substring.

It is an Ulam number.

It is a plaindrome in base 11.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2129353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1064678 + 1064679.

It is an arithmetic number, because the mean of its divisors is an integer number (1064679).

2^2129357 is an apocalyptic number.

It is an amenable number.

2129357 is a deficient number, since it is larger than the sum of its proper divisors (1).

2129357 is an equidigital number, since it uses as much as digits as its factorization.

2129357 is an evil number, because the sum of its binary digits is even.

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

The square root of 2129357 is about 1459.2316471349. The cubic root of 2129357 is about 128.6518867945.

The spelling of 2129357 in words is "two million, one hundred twenty-nine thousand, three hundred fifty-seven".