77876242 has 4 divisors (see below), whose sum is σ = 116814366. Its totient is φ = 38938120.

The previous prime is 77876237. The next prime is 77876243. The reversal of 77876242 is 24267877.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24267877 = 3433 ⋅7069.

It can be written as a sum of positive squares in only one way, i.e., 73462041 + 4414201 = 8571^2 + 2101^2 .

It is not an unprimeable number, because it can be changed into a prime (77876243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19469059 + ... + 19469062.

Almost surely, 2^77876242 is an apocalyptic number.

77876242 is a deficient number, since it is larger than the sum of its proper divisors (38938124).

77876242 is a wasteful number, since it uses less digits than its factorization.

77876242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38938123.

The product of its digits is 263424, while the sum is 43.

The square root of 77876242 is about 8824.7516678941. The cubic root of 77876242 is about 427.0397760335.

The spelling of 77876242 in words is "seventy-seven million, eight hundred seventy-six thousand, two hundred forty-two".