42065145 has 24 divisors (see below), whose sum is σ = 76752000. Its totient is φ = 21253536.

The previous prime is 42065119. The next prime is 42065203. The reversal of 42065145 is 54156024.

42065145 is a `hidden beast` number, since 4 + 2 + 0 + 651 + 4 + 5 = 666.

It is not a de Polignac number, because 42065145 - 2⁶ = 42065081 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23745 + ... + 25454.

It is an arithmetic number, because the mean of its divisors is an integer number (3198000).

Almost surely, 2^42065145 is an apocalyptic number.

42065145 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42065145 is a deficient number, since it is larger than the sum of its proper divisors (34686855).

42065145 is a wasteful number, since it uses less digits than its factorization.

42065145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49229 (or 49226 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 42065145 is about 6485.7647968455. The cubic root of 42065145 is about 347.7822905035.

The spelling of 42065145 in words is "forty-two million, sixty-five thousand, one hundred forty-five".