742940691 has 4 divisors (see below), whose sum is σ = 990587592. Its totient is φ = 495293792.

The previous prime is 742940633. The next prime is 742940701. The reversal of 742940691 is 196049247.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 742940691 - 2¹⁰ = 742939667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (742940291) 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, 123823446 + ... + 123823451.

It is an arithmetic number, because the mean of its divisors is an integer number (247646898).

Almost surely, 2^742940691 is an apocalyptic number.

742940691 is a deficient number, since it is larger than the sum of its proper divisors (247646901).

742940691 is a wasteful number, since it uses less digits than its factorization.

742940691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247646900.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 742940691 is about 27256.9384010751. The cubic root of 742940691 is about 905.7007244593.

The spelling of 742940691 in words is "seven hundred forty-two million, nine hundred forty thousand, six hundred ninety-one".