126356646 has 16 divisors (see below), whose sum is σ = 272152944. Its totient is φ = 38878944.

The previous prime is 126356603. The next prime is 126356647. The reversal of 126356646 is 646653621.

It is a super-3 number, since 3×126356646³ (a number of 25 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126356647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 809901 + ... + 810056.

It is an arithmetic number, because the mean of its divisors is an integer number (17009559).

Almost surely, 2^126356646 is an apocalyptic number.

126356646 is an abundant number, since it is smaller than the sum of its proper divisors (145796298).

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

126356646 is a wasteful number, since it uses less digits than its factorization.

126356646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1619975.

The product of its digits is 155520, while the sum is 39.

The square root of 126356646 is about 11240.8472100638. The cubic root of 126356646 is about 501.8023565485.

The spelling of 126356646 in words is "one hundred twenty-six million, three hundred fifty-six thousand, six hundred forty-six".