750142661 has 4 divisors (see below), whose sum is σ = 750439500. Its totient is φ = 749845824.

The previous prime is 750142649. The next prime is 750142691. The reversal of 750142661 is 166241057.

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

It can be written as a sum of positive squares in 2 ways, for example, as 288150625 + 461992036 = 16975^2 + 21494^2 .

It is a cyclic number.

It is not a de Polignac number, because 750142661 - 2⁶ = 750142597 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 (750142621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144596 + ... + 149693.

It is an arithmetic number, because the mean of its divisors is an integer number (187609875).

Almost surely, 2^750142661 is an apocalyptic number.

It is an amenable number.

750142661 is a deficient number, since it is larger than the sum of its proper divisors (296839).

750142661 is a wasteful number, since it uses less digits than its factorization.

750142661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296838.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 750142661 is about 27388.7323730033. The cubic root of 750142661 is about 908.6178999285.

The spelling of 750142661 in words is "seven hundred fifty million, one hundred forty-two thousand, six hundred sixty-one".