742726212505 has 8 divisors (see below), whose sum is σ = 891280785024. Its totient is φ = 594174750000.

The previous prime is 742726212493. The next prime is 742726212539. The reversal of 742726212505 is 505212627247.

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

It is not a de Polignac number, because 742726212505 - 2¹³ = 742726204313 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215121 + ... + 1237630.

It is an arithmetic number, because the mean of its divisors is an integer number (111410098128).

Almost surely, 2^742726212505 is an apocalyptic number.

It is an amenable number.

742726212505 is a deficient number, since it is larger than the sum of its proper divisors (148554572519).

742726212505 is a wasteful number, since it uses less digits than its factorization.

742726212505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1555007.

The product of its (nonzero) digits is 470400, while the sum is 43.

The spelling of 742726212505 in words is "seven hundred forty-two billion, seven hundred twenty-six million, two hundred twelve thousand, five hundred five".