42773642 has 4 divisors (see below), whose sum is σ = 64160466. Its totient is φ = 21386820.

The previous prime is 42773623. The next prime is 42773659. The reversal of 42773642 is 24637724.

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

It can be written as a sum of positive squares in only one way, i.e., 37442161 + 5331481 = 6119^2 + 2309^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10693409 + ... + 10693412.

Almost surely, 2^42773642 is an apocalyptic number.

42773642 is a deficient number, since it is larger than the sum of its proper divisors (21386824).

42773642 is a wasteful number, since it uses less digits than its factorization.

42773642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21386823.

The product of its digits is 56448, while the sum is 35.

The square root of 42773642 is about 6540.1561143447. The cubic root of 42773642 is about 349.7239782956.

The spelling of 42773642 in words is "forty-two million, seven hundred seventy-three thousand, six hundred forty-two".