126420790 has 32 divisors (see below), whose sum is σ = 236226816. Its totient is φ = 48660480.

The previous prime is 126420787. The next prime is 126420793. The reversal of 126420790 is 97024621.

It is an interprime number because it is at equal distance from previous prime (126420787) and next prime (126420793).

It is a super-2 number, since 2×126420790² = 31964432288448200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126420793) 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, 58774 + ... + 60886.

It is an arithmetic number, because the mean of its divisors is an integer number (7382088).

Almost surely, 2^126420790 is an apocalyptic number.

126420790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

126420790 is a deficient number, since it is larger than the sum of its proper divisors (109806026).

126420790 is a wasteful number, since it uses less digits than its factorization.

126420790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2344.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 126420790 is about 11243.7000137855. The cubic root of 126420790 is about 501.8872542470.

The spelling of 126420790 in words is "one hundred twenty-six million, four hundred twenty thousand, seven hundred ninety".