126155505 has 16 divisors (see below), whose sum is σ = 230684544. Its totient is φ = 57671040.

The previous prime is 126155501. The next prime is 126155509. The reversal of 126155505 is 505551621.

It is an interprime number because it is at equal distance from previous prime (126155501) and next prime (126155509).

It is not a de Polignac number, because 126155505 - 2² = 126155501 is a prime.

It is a super-2 number, since 2×126155505² = 31830422883610050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (126155501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 600636 + ... + 600845.

It is an arithmetic number, because the mean of its divisors is an integer number (14417784).

Almost surely, 2^126155505 is an apocalyptic number.

126155505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

126155505 is a deficient number, since it is larger than the sum of its proper divisors (104529039).

126155505 is a wasteful number, since it uses less digits than its factorization.

126155505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1201496.

The product of its (nonzero) digits is 7500, while the sum is 30.

The square root of 126155505 is about 11231.8967676880. The cubic root of 126155505 is about 501.5359502158.

The spelling of 126155505 in words is "one hundred twenty-six million, one hundred fifty-five thousand, five hundred five".