742587990 has 32 divisors (see below), whose sum is σ = 1788314976. Its totient is φ = 197345280.

The previous prime is 742587977. The next prime is 742587991. The reversal of 742587990 is 99785247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742587991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33451 + ... + 51030.

It is an arithmetic number, because the mean of its divisors is an integer number (55884843).

Almost surely, 2^742587990 is an apocalyptic number.

742587990 is an abundant number, since it is smaller than the sum of its proper divisors (1045726986).

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

742587990 is a wasteful number, since it uses less digits than its factorization.

742587990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84784.

The product of its (nonzero) digits is 1270080, while the sum is 51.

The square root of 742587990 is about 27250.4677024083. The cubic root of 742587990 is about 905.5573787348.

The spelling of 742587990 in words is "seven hundred forty-two million, five hundred eighty-seven thousand, nine hundred ninety".