126994331 has 2 divisors, whose sum is σ = 126994332. Its totient is φ = 126994330.

The previous prime is 126994319. The next prime is 126994333. The reversal of 126994331 is 133499621.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 126994331 - 2¹⁸ = 126732187 is a prime.

It is a super-2 number, since 2×126994331² = 32255120212275122, which contains 22 as substring.

Together with 126994333, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (126994333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63497165 + 63497166.

It is an arithmetic number, because the mean of its divisors is an integer number (63497166).

Almost surely, 2^126994331 is an apocalyptic number.

126994331 is a deficient number, since it is larger than the sum of its proper divisors (1).

126994331 is an equidigital number, since it uses as much as digits as its factorization.

126994331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34992, while the sum is 38.

The square root of 126994331 is about 11269.1761455752. The cubic root of 126994331 is about 502.6450903192.

The spelling of 126994331 in words is "one hundred twenty-six million, nine hundred ninety-four thousand, three hundred thirty-one".