742669 has 4 divisors (see below), whose sum is σ = 744444. Its totient is φ = 740896.

The previous prime is 742663. The next prime is 742673. The reversal of 742669 is 966247.

742669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 966247 = 41 ⋅23567.

It can be written as a sum of positive squares in 2 ways, for example, as 544644 + 198025 = 738^2 + 445^2 .

It is a cyclic number.

It is not a de Polignac number, because 742669 - 2⁷ = 742541 is a prime.

It is a super-2 number, since 2×742669² = 1103114487122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742663) 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, 129 + ... + 1225.

It is an arithmetic number, because the mean of its divisors is an integer number (186111).

2⁷⁴²⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

742669 is a deficient number, since it is larger than the sum of its proper divisors (1775).

742669 is a wasteful number, since it uses less digits than its factorization.

742669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1774.

The product of its digits is 18144, while the sum is 34.

The square root of 742669 is about 861.7824551475. The cubic root of 742669 is about 90.5590307060.

It can be divided in two parts, 74 and 2669, that multiplied together give a triangular number (197506 = T₆₂₈).

The spelling of 742669 in words is "seven hundred forty-two thousand, six hundred sixty-nine".