126340557 has 32 divisors (see below), whose sum is σ = 207621120. Its totient is φ = 66718080.

The previous prime is 126340553. The next prime is 126340567. The reversal of 126340557 is 755043621.

It is not a de Polignac number, because 126340557 - 2² = 126340553 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126340553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12498 + ... + 20220.

It is an arithmetic number, because the mean of its divisors is an integer number (6488160).

Almost surely, 2^126340557 is an apocalyptic number.

It is an amenable number.

126340557 is a deficient number, since it is larger than the sum of its proper divisors (81280563).

126340557 is a wasteful number, since it uses less digits than its factorization.

126340557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7793.

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 126340557 is about 11240.1315383762. The cubic root of 126340557 is about 501.7810574688.

The spelling of 126340557 in words is "one hundred twenty-six million, three hundred forty thousand, five hundred fifty-seven".