77242741 has 8 divisors (see below), whose sum is σ = 79279200. Its totient is φ = 75230640.

The previous prime is 77242727. The next prime is 77242751. The reversal of 77242741 is 14724277.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 77242741 - 2¹⁵ = 77209973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 77242697 and 77242706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77242721) 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, 426 + ... + 12436.

It is an arithmetic number, because the mean of its divisors is an integer number (9909900).

Almost surely, 2^77242741 is an apocalyptic number.

It is an amenable number.

77242741 is a deficient number, since it is larger than the sum of its proper divisors (2036459).

77242741 is a wasteful number, since it uses less digits than its factorization.

77242741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12179.

The product of its digits is 21952, while the sum is 34.

The square root of 77242741 is about 8788.7849558400. The cubic root of 77242741 is about 425.8786730097.

The spelling of 77242741 in words is "seventy-seven million, two hundred forty-two thousand, seven hundred forty-one".