42779532 has 12 divisors (see below), whose sum is σ = 99818936. Its totient is φ = 14259840.

The previous prime is 42779509. The next prime is 42779537. The reversal of 42779532 is 23597724.

It is a tau number, because it is divible by the number of its divisors (12).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (42779537) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1782469 + ... + 1782492.

Almost surely, 2^42779532 is an apocalyptic number.

It is an amenable number.

42779532 is an abundant number, since it is smaller than the sum of its proper divisors (57039404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42779532 is a wasteful number, since it uses less digits than its factorization.

42779532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3564968 (or 3564966 counting only the distinct ones).

The product of its digits is 105840, while the sum is 39.

The square root of 42779532 is about 6540.6063939057. The cubic root of 42779532 is about 349.7400300789.

The spelling of 42779532 in words is "forty-two million, seven hundred seventy-nine thousand, five hundred thirty-two".