126642701 has 4 divisors (see below), whose sum is σ = 126766332. Its totient is φ = 126519072.

The previous prime is 126642689. The next prime is 126642713. The reversal of 126642701 is 107246621.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (126642689) and next prime (126642713).

It can be written as a sum of positive squares in 2 ways, for example, as 54834025 + 71808676 = 7405^2 + 8474^2 .

It is a cyclic number.

It is not a de Polignac number, because 126642701 - 2¹⁸ = 126380557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126642001) 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 3 ways as a sum of consecutive naturals, for example, 60266 + ... + 62331.

It is an arithmetic number, because the mean of its divisors is an integer number (31691583).

Almost surely, 2^126642701 is an apocalyptic number.

It is an amenable number.

126642701 is a deficient number, since it is larger than the sum of its proper divisors (123631).

126642701 is a wasteful number, since it uses less digits than its factorization.

126642701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123630.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 126642701 is about 11253.5639243752. The cubic root of 126642701 is about 502.1807428931.

The spelling of 126642701 in words is "one hundred twenty-six million, six hundred forty-two thousand, seven hundred one".