77133442 has 8 divisors (see below), whose sum is σ = 115782732. Its totient is φ = 38539200.

The previous prime is 77133401. The next prime is 77133481. The reversal of 77133442 is 24433177.

It can be written as a sum of positive squares in 2 ways, for example, as 73256481 + 3876961 = 8559^2 + 1969^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10059 + ... + 15982.

Almost surely, 2^77133442 is an apocalyptic number.

77133442 is a deficient number, since it is larger than the sum of its proper divisors (38649290).

77133442 is a wasteful number, since it uses less digits than its factorization.

77133442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27524.

The product of its digits is 14112, while the sum is 31.

The square root of 77133442 is about 8782.5646595969. The cubic root of 77133442 is about 425.6777044567.

The spelling of 77133442 in words is "seventy-seven million, one hundred thirty-three thousand, four hundred forty-two".