742789655 has 4 divisors (see below), whose sum is σ = 891347592. Its totient is φ = 594231720.

The previous prime is 742789633. The next prime is 742789681. The reversal of 742789655 is 556987247.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 556987247 = 6217 ⋅89591.

It is not a de Polignac number, because 742789655 - 2²⁰ = 741741079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 742789597 and 742789606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74278961 + ... + 74278970.

It is an arithmetic number, because the mean of its divisors is an integer number (222836898).

Almost surely, 2^742789655 is an apocalyptic number.

742789655 is a deficient number, since it is larger than the sum of its proper divisors (148557937).

742789655 is a wasteful number, since it uses less digits than its factorization.

742789655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148557936.

The product of its digits is 4233600, while the sum is 53.

The square root of 742789655 is about 27254.1676629465. The cubic root of 742789655 is about 905.6393455421.

The spelling of 742789655 in words is "seven hundred forty-two million, seven hundred eighty-nine thousand, six hundred fifty-five".