77469542 has 4 divisors (see below), whose sum is σ = 116204316. Its totient is φ = 38734770.

The previous prime is 77469529. The next prime is 77469551. The reversal of 77469542 is 24596477.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24596477 = 2729 ⋅9013.

It is a junction number, because it is equal to n+sod(n) for n = 77469493 and 77469502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19367384 + ... + 19367387.

It is an arithmetic number, because the mean of its divisors is an integer number (29051079).

Almost surely, 2^77469542 is an apocalyptic number.

77469542 is a deficient number, since it is larger than the sum of its proper divisors (38734774).

77469542 is a wasteful number, since it uses less digits than its factorization.

77469542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38734773.

The product of its digits is 423360, while the sum is 44.

The square root of 77469542 is about 8801.6783626761. The cubic root of 77469542 is about 426.2950889544.

The spelling of 77469542 in words is "seventy-seven million, four hundred sixty-nine thousand, five hundred forty-two".