742869871 has 4 divisors (see below), whose sum is σ = 743020992. Its totient is φ = 742718752.

The previous prime is 742869781. The next prime is 742869877. The reversal of 742869871 is 178968247.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 178968247 = 349 ⋅512803.

It is a cyclic number.

It is not a de Polignac number, because 742869871 - 2¹⁵ = 742837103 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 (742869877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67930 + ... + 78103.

It is an arithmetic number, because the mean of its divisors is an integer number (185755248).

Almost surely, 2^742869871 is an apocalyptic number.

742869871 is a deficient number, since it is larger than the sum of its proper divisors (151121).

742869871 is a wasteful number, since it uses less digits than its factorization.

742869871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151120.

The product of its digits is 1354752, while the sum is 52.

The square root of 742869871 is about 27255.6392513549. The cubic root of 742869871 is about 905.6719452381.

The spelling of 742869871 in words is "seven hundred forty-two million, eight hundred sixty-nine thousand, eight hundred seventy-one".