42770545 has 8 divisors (see below), whose sum is σ = 52980480. Its totient is φ = 33112560.

The previous prime is 42770531. The next prime is 42770549. The reversal of 42770545 is 54507724.

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

It is not a de Polignac number, because 42770545 - 2¹⁹ = 42246257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42770545.

It is not an unprimeable number, because it can be changed into a prime (42770549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137815 + ... + 138124.

It is an arithmetic number, because the mean of its divisors is an integer number (6622560).

Almost surely, 2^42770545 is an apocalyptic number.

It is an amenable number.

42770545 is a deficient number, since it is larger than the sum of its proper divisors (10209935).

42770545 is a wasteful number, since it uses less digits than its factorization.

42770545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275975.

The product of its (nonzero) digits is 39200, while the sum is 34.

The square root of 42770545 is about 6539.9193420103. The cubic root of 42770545 is about 349.7155375733.

The spelling of 42770545 in words is "forty-two million, seven hundred seventy thousand, five hundred forty-five".