42776542 has 4 divisors (see below), whose sum is σ = 64164816. Its totient is φ = 21388270.

The previous prime is 42776519. The next prime is 42776557. The reversal of 42776542 is 24567724.

It is a semiprime because it is the product of two primes.

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, 10694134 + ... + 10694137.

It is an arithmetic number, because the mean of its divisors is an integer number (16041204).

Almost surely, 2^42776542 is an apocalyptic number.

42776542 is a deficient number, since it is larger than the sum of its proper divisors (21388274).

42776542 is a wasteful number, since it uses less digits than its factorization.

42776542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21388273.

The product of its digits is 94080, while the sum is 37.

The square root of 42776542 is about 6540.3778178329. The cubic root of 42776542 is about 349.7318817347.

It can be divided in two parts, 4 and 2776542, that added together give a triangular number (2776546 = T₂₃₅₆).

The spelling of 42776542 in words is "forty-two million, seven hundred seventy-six thousand, five hundred forty-two".