126994039 has 4 divisors (see below), whose sum is σ = 127632400. Its totient is φ = 126355680.

The previous prime is 126994037. The next prime is 126994057. The reversal of 126994039 is 930499621.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 930499621 = 9049 ⋅102829.

It is a cyclic number.

It is not a de Polignac number, because 126994039 - 2¹ = 126994037 is a prime.

It is a super-2 number, since 2×126994039² = 32254971883067042, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 126993986 and 126994004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126994037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 318882 + ... + 319279.

It is an arithmetic number, because the mean of its divisors is an integer number (31908100).

Almost surely, 2^126994039 is an apocalyptic number.

126994039 is a deficient number, since it is larger than the sum of its proper divisors (638361).

126994039 is an equidigital number, since it uses as much as digits as its factorization.

126994039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638360.

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 126994039 is about 11269.1631898735. The cubic root of 126994039 is about 502.6447050724.

The spelling of 126994039 in words is "one hundred twenty-six million, nine hundred ninety-four thousand, thirty-nine".