126542031 has 64 divisors (see below), whose sum is σ = 222953472. Its totient is φ = 61920000.

The previous prime is 126542027. The next prime is 126542041. The reversal of 126542031 is 130245621.

It is not a de Polignac number, because 126542031 - 2² = 126542027 is a prime.

It is a super-2 number, since 2×126542031² = 32025771219209922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 126541992 and 126542010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126542041) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 293386 + ... + 293816.

It is an arithmetic number, because the mean of its divisors is an integer number (3483648).

Almost surely, 2^126542031 is an apocalyptic number.

126542031 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

126542031 is a deficient number, since it is larger than the sum of its proper divisors (96411441).

126542031 is a wasteful number, since it uses less digits than its factorization.

126542031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 126542031 is about 11249.0902298808. The cubic root of 126542031 is about 502.0476441926.

Adding to 126542031 its reverse (130245621), we get a palindrome (256787652).

The spelling of 126542031 in words is "one hundred twenty-six million, five hundred forty-two thousand, thirty-one".