126139080 has 64 divisors (see below), whose sum is σ = 379157760. Its totient is φ = 33571328.

The previous prime is 126139073. The next prime is 126139087. The reversal of 126139080 is 80931621.

It is an interprime number because it is at equal distance from previous prime (126139073) and next prime (126139087).

It is a super-2 number, since 2×126139080² = 31822135006492800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (126139087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113809 + ... + 114911.

It is an arithmetic number, because the mean of its divisors is an integer number (5924340).

Almost surely, 2^126139080 is an apocalyptic number.

126139080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

126139080 is an abundant number, since it is smaller than the sum of its proper divisors (253018680).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

126139080 is a wasteful number, since it uses less digits than its factorization.

126139080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2070 (or 2066 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 126139080 is about 11231.1655672953. The cubic root of 126139080 is about 501.5141832029.

The spelling of 126139080 in words is "one hundred twenty-six million, one hundred thirty-nine thousand, eighty".