742621427130646 has 16 divisors (see below), whose sum is σ = 1340068740687360. Its totient is φ = 301515466654440.

The previous prime is 742621427130643. The next prime is 742621427130647. The reversal of 742621427130646 is 646031724126247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742621427130643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1395904937950 + ... + 1395904938481.

It is an arithmetic number, because the mean of its divisors is an integer number (83754296292960).

Almost surely, 2^{742621427130646} is an apocalyptic number.

742621427130646 is a deficient number, since it is larger than the sum of its proper divisors (597447313556714).

742621427130646 is a wasteful number, since it uses less digits than its factorization.

742621427130646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2791809876459.

The product of its (nonzero) digits is 16257024, while the sum is 55.

The spelling of 742621427130646 in words is "seven hundred forty-two trillion, six hundred twenty-one billion, four hundred twenty-seven million, one hundred thirty thousand, six hundred forty-six".