742742645 has 8 divisors (see below), whose sum is σ = 910255104. Its totient is φ = 581551504.

The previous prime is 742742641. The next prime is 742742659. The reversal of 742742645 is 546247247.

742742645 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 742742645 - 2² = 742742641 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 (742742641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1580069 + ... + 1580538.

It is an arithmetic number, because the mean of its divisors is an integer number (113781888).

Almost surely, 2^742742645 is an apocalyptic number.

It is an amenable number.

742742645 is a deficient number, since it is larger than the sum of its proper divisors (167512459).

742742645 is a wasteful number, since it uses less digits than its factorization.

742742645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3160659.

The product of its digits is 376320, while the sum is 41.

The square root of 742742645 is about 27253.3052123958. The cubic root of 742742645 is about 905.6202396380.

The spelling of 742742645 in words is "seven hundred forty-two million, seven hundred forty-two thousand, six hundred forty-five".