77403742 has 8 divisors (see below), whose sum is σ = 125036856. Its totient is φ = 35724792.

The previous prime is 77403731. The next prime is 77403743. The reversal of 77403742 is 24730477.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 77403698 and 77403707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77403743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1488508 + ... + 1488559.

It is an arithmetic number, because the mean of its divisors is an integer number (15629607).

Almost surely, 2^77403742 is an apocalyptic number.

77403742 is a deficient number, since it is larger than the sum of its proper divisors (47633114).

77403742 is a wasteful number, since it uses less digits than its factorization.

77403742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2977082.

The product of its (nonzero) digits is 32928, while the sum is 34.

The square root of 77403742 is about 8797.9396451669. The cubic root of 77403742 is about 426.1743612400.

The spelling of 77403742 in words is "seventy-seven million, four hundred three thousand, seven hundred forty-two".