742771 has 4 divisors (see below), whose sum is σ = 745200. Its totient is φ = 740344.

The previous prime is 742759. The next prime is 742783. The reversal of 742771 is 177247.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 177247 = 7 ⋅25321.

It is an interprime number because it is at equal distance from previous prime (742759) and next prime (742783).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-742771 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (742711) 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, 676 + ... + 1393.

It is an arithmetic number, because the mean of its divisors is an integer number (186300).

2⁷⁴²⁷⁷¹ is an apocalyptic number.

742771 is a deficient number, since it is larger than the sum of its proper divisors (2429).

742771 is a wasteful number, since it uses less digits than its factorization.

742771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2428.

The product of its digits is 2744, while the sum is 28.

The square root of 742771 is about 861.8416327841. The cubic root of 742771 is about 90.5631763834.

It can be divided in two parts, 7 and 42771, that added together give a triangular number (42778 = T₂₉₂).

The spelling of 742771 in words is "seven hundred forty-two thousand, seven hundred seventy-one", and thus it is an iban number.