42771505 has 16 divisors (see below), whose sum is σ = 59053824. Its totient is φ = 29131200.

The previous prime is 42771499. The next prime is 42771511. The reversal of 42771505 is 50517724.

It is an interprime number because it is at equal distance from previous prime (42771499) and next prime (42771511).

It is not a de Polignac number, because 42771505 - 2³ = 42771497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1239 + ... + 9331.

It is an arithmetic number, because the mean of its divisors is an integer number (3690864).

Almost surely, 2^42771505 is an apocalyptic number.

It is an amenable number.

42771505 is a deficient number, since it is larger than the sum of its proper divisors (16282319).

42771505 is a wasteful number, since it uses less digits than its factorization.

42771505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8256.

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 42771505 is about 6539.9927369990. The cubic root of 42771505 is about 349.7181540500.

The spelling of 42771505 in words is "forty-two million, seven hundred seventy-one thousand, five hundred five".