42779545 has 8 divisors (see below), whose sum is σ = 54037440. Its totient is φ = 32422320.

The previous prime is 42779537. The next prime is 42779551. The reversal of 42779545 is 54597724.

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

It is not a de Polignac number, because 42779545 - 2³ = 42779537 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 225061 + ... + 225250.

It is an arithmetic number, because the mean of its divisors is an integer number (6754680).

Almost surely, 2^42779545 is an apocalyptic number.

It is an amenable number.

42779545 is a deficient number, since it is larger than the sum of its proper divisors (11257895).

42779545 is a wasteful number, since it uses less digits than its factorization.

42779545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450335.

The product of its digits is 352800, while the sum is 43.

The square root of 42779545 is about 6540.6073876973. The cubic root of 42779545 is about 349.7400655056.

The spelling of 42779545 in words is "forty-two million, seven hundred seventy-nine thousand, five hundred forty-five".