742387 has 8 divisors (see below), whose sum is σ = 801360. Its totient is φ = 685440.

The previous prime is 742381. The next prime is 742393. The reversal of 742387 is 783247.

It is an interprime number because it is at equal distance from previous prime (742381) and next prime (742393).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-742387 is a prime.

It is a super-2 number, since 2×742387² = 1102276915538, which contains 22 as substring.

It is a Duffinian number.

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

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 303 + ... + 1255.

It is an arithmetic number, because the mean of its divisors is an integer number (100170).

2⁷⁴²³⁸⁷ is an apocalyptic number.

742387 is a deficient number, since it is larger than the sum of its proper divisors (58973).

742387 is a wasteful number, since it uses less digits than its factorization.

742387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013.

The product of its digits is 9408, while the sum is 31.

The square root of 742387 is about 861.6188252354. The cubic root of 742387 is about 90.5475671515.

The spelling of 742387 in words is "seven hundred forty-two thousand, three hundred eighty-seven".