742125643 has 8 divisors (see below), whose sum is σ = 854822912. Its totient is φ = 631098216.

The previous prime is 742125623. The next prime is 742125653. The reversal of 742125643 is 346521247.

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

It is not a de Polignac number, because 742125643 - 2¹⁷ = 741994571 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 742125599 and 742125608.

It is not an unprimeable number, because it can be changed into a prime (742125623) 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, 416505 + ... + 418282.

It is an arithmetic number, because the mean of its divisors is an integer number (106852864).

Almost surely, 2^742125643 is an apocalyptic number.

742125643 is a deficient number, since it is larger than the sum of its proper divisors (112697269).

742125643 is a wasteful number, since it uses less digits than its factorization.

742125643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834921.

The product of its digits is 40320, while the sum is 34.

The square root of 742125643 is about 27241.9830959495. The cubic root of 742125643 is about 905.3694016126.

The spelling of 742125643 in words is "seven hundred forty-two million, one hundred twenty-five thousand, six hundred forty-three".