742856765 has 8 divisors (see below), whose sum is σ = 1018775040. Its totient is φ = 509387472.

The previous prime is 742856759. The next prime is 742856771. The reversal of 742856765 is 567658247.

It is an interprime number because it is at equal distance from previous prime (742856759) and next prime (742856771).

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 742856765 - 2¹⁶ = 742791229 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10612205 + ... + 10612274.

It is an arithmetic number, because the mean of its divisors is an integer number (127346880).

Almost surely, 2^742856765 is an apocalyptic number.

It is an amenable number.

742856765 is a deficient number, since it is larger than the sum of its proper divisors (275918275).

742856765 is a wasteful number, since it uses less digits than its factorization.

742856765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21224491.

The product of its digits is 2822400, while the sum is 50.

The square root of 742856765 is about 27255.3988229855. The cubic root of 742856765 is about 905.6666191342. Note that the first 4 decimals are identical.

The spelling of 742856765 in words is "seven hundred forty-two million, eight hundred fifty-six thousand, seven hundred sixty-five".