126320502 has 64 divisors (see below), whose sum is σ = 319500288. Its totient is φ = 32340000.

The previous prime is 126320429. The next prime is 126320503. The reversal of 126320502 is 205023621.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126320503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30877 + ... + 34727.

It is an arithmetic number, because the mean of its divisors is an integer number (4992192).

Almost surely, 2^126320502 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 126320502, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159750144).

126320502 is an abundant number, since it is smaller than the sum of its proper divisors (193179786).

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

126320502 is a wasteful number, since it uses less digits than its factorization.

126320502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3945.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 126320502 is about 11239.2393870760. The cubic root of 126320502 is about 501.7545055527.

The spelling of 126320502 in words is "one hundred twenty-six million, three hundred twenty thousand, five hundred two".