742587978 has 32 divisors (see below), whose sum is σ = 1676064960. Its totient is φ = 217266560.

The previous prime is 742587977. The next prime is 742587991. The reversal of 742587978 is 879785247.

742587978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (742587973) 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, 192075 + ... + 195902.

It is an arithmetic number, because the mean of its divisors is an integer number (52377030).

Almost surely, 2^742587978 is an apocalyptic number.

742587978 is an abundant number, since it is smaller than the sum of its proper divisors (933476982).

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

742587978 is a wasteful number, since it uses less digits than its factorization.

742587978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388022.

The product of its digits is 7902720, while the sum is 57.

The square root of 742587978 is about 27250.4674822286. The cubic root of 742587978 is about 905.5573738570.

The spelling of 742587978 in words is "seven hundred forty-two million, five hundred eighty-seven thousand, nine hundred seventy-eight".