742388 has 12 divisors (see below), whose sum is σ = 1341312. Its totient is φ = 359160.

The previous prime is 742381. The next prime is 742393. The reversal of 742388 is 883247.

It is a super-2 number, since 2×742388² = 1102279885088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742381) by changing a digit.

742388 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2870 + ... + 3117.

It is an arithmetic number, because the mean of its divisors is an integer number (111776).

2⁷⁴²³⁸⁸ is an apocalyptic number.

It is an amenable number.

742388 is a deficient number, since it is larger than the sum of its proper divisors (598924).

742388 is a wasteful number, since it uses less digits than its factorization.

742388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6022 (or 6020 counting only the distinct ones).

The product of its digits is 10752, while the sum is 32.

The square root of 742388 is about 861.6194055382. The cubic root of 742388 is about 90.5476078075.

The spelling of 742388 in words is "seven hundred forty-two thousand, three hundred eighty-eight".