126703557 has 6 divisors (see below), whose sum is σ = 183016262. Its totient is φ = 84469032.

The previous prime is 126703543. The next prime is 126703561. The reversal of 126703557 is 755307621.

It can be written as a sum of positive squares in only one way, i.e., 125417601 + 1285956 = 11199^2 + 1134^2 .

It is not a de Polignac number, because 126703557 - 2¹⁰ = 126702533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126703517) 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, 7039078 + ... + 7039095.

Almost surely, 2^126703557 is an apocalyptic number.

It is an amenable number.

126703557 is a deficient number, since it is larger than the sum of its proper divisors (56312705).

126703557 is a wasteful number, since it uses less digits than its factorization.

126703557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14078179 (or 14078176 counting only the distinct ones).

The product of its (nonzero) digits is 44100, while the sum is 36.

The square root of 126703557 is about 11256.2674541786. The cubic root of 126703557 is about 502.2611681557.

It can be divided in two parts, 126703 and 557, that added together give a triangular number (127260 = T₅₀₄).

The spelling of 126703557 in words is "one hundred twenty-six million, seven hundred three thousand, five hundred fifty-seven".