742581138 has 16 divisors (see below), whose sum is σ = 1599405696. Its totient is φ = 228486480.

The previous prime is 742581137. The next prime is 742581149. The reversal of 742581138 is 831185247.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a junction number, because it is equal to n+sod(n) for n = 742581096 and 742581105.

It is not an unprimeable number, because it can be changed into a prime (742581137) 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, 4760058 + ... + 4760213.

It is an arithmetic number, because the mean of its divisors is an integer number (99962856).

Almost surely, 2^742581138 is an apocalyptic number.

742581138 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

742581138 is an abundant number, since it is smaller than the sum of its proper divisors (856824558).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

742581138 is a wasteful number, since it uses less digits than its factorization.

742581138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9520289.

The product of its digits is 53760, while the sum is 39.

The square root of 742581138 is about 27250.3419795055. The cubic root of 742581138 is about 905.5545934765.

The spelling of 742581138 in words is "seven hundred forty-two million, five hundred eighty-one thousand, one hundred thirty-eight".