742021166256526 has 8 divisors (see below), whose sum is σ = 1198649576260584. Its totient is φ = 342471307503000.

The previous prime is 742021166256523. The next prime is 742021166256533. The reversal of 742021166256526 is 625652661120247.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×742021166256526² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742021166256523) 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 3 ways as a sum of consecutive naturals, for example, 14269637812600 + ... + 14269637812651.

It is an arithmetic number, because the mean of its divisors is an integer number (149831197032573).

Almost surely, 2^{742021166256526} is an apocalyptic number.

742021166256526 is a deficient number, since it is larger than the sum of its proper divisors (456628410004058).

742021166256526 is a wasteful number, since it uses less digits than its factorization.

742021166256526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28539275625266.

The product of its (nonzero) digits is 14515200, while the sum is 55.

The spelling of 742021166256526 in words is "seven hundred forty-two trillion, twenty-one billion, one hundred sixty-six million, two hundred fifty-six thousand, five hundred twenty-six".