742374451281 has 4 divisors (see below), whose sum is σ = 989832601712. Its totient is φ = 494916300852.

The previous prime is 742374451243. The next prime is 742374451309. The reversal of 742374451281 is 182154473247.

742374451281 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 742374451281 - 2¹⁴ = 742374434897 is a prime.

It is a super-2 number, since 2×742374451281² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 742374451281.

It is not an unprimeable number, because it can be changed into a prime (742374451981) 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, 123729075211 + ... + 123729075216.

It is an arithmetic number, because the mean of its divisors is an integer number (247458150428).

Almost surely, 2^742374451281 is an apocalyptic number.

It is an amenable number.

742374451281 is a deficient number, since it is larger than the sum of its proper divisors (247458150431).

742374451281 is a wasteful number, since it uses less digits than its factorization.

742374451281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247458150430.

The product of its digits is 1505280, while the sum is 48.

The spelling of 742374451281 in words is "seven hundred forty-two billion, three hundred seventy-four million, four hundred fifty-one thousand, two hundred eighty-one".