742238387 has 8 divisors (see below), whose sum is σ = 809957232. Its totient is φ = 674560000.

The previous prime is 742238311. The next prime is 742238459. The reversal of 742238387 is 783832247.

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 742238387 - 2¹² = 742234291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (742238087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38387 + ... + 54387.

It is an arithmetic number, because the mean of its divisors is an integer number (101244654).

Almost surely, 2^742238387 is an apocalyptic number.

742238387 is a deficient number, since it is larger than the sum of its proper divisors (67718845).

742238387 is a wasteful number, since it uses less digits than its factorization.

742238387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20229.

The product of its digits is 451584, while the sum is 44.

The square root of 742238387 is about 27244.0523233971. The cubic root of 742238387 is about 905.4152473083.

The spelling of 742238387 in words is "seven hundred forty-two million, two hundred thirty-eight thousand, three hundred eighty-seven".