42276645 has 24 divisors (see below), whose sum is σ = 76467456. Its totient is φ = 21566688.

The previous prime is 42276623. The next prime is 42276701. The reversal of 42276645 is 54667224.

42276645 is a `hidden beast` number, since 4 + 2 + 2 + 7 + 6 + 645 = 666.

It is not a de Polignac number, because 42276645 - 2⁶ = 42276581 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 19389 + ... + 21458.

It is an arithmetic number, because the mean of its divisors is an integer number (3186144).

Almost surely, 2^42276645 is an apocalyptic number.

42276645 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

42276645 is a deficient number, since it is larger than the sum of its proper divisors (34190811).

42276645 is a wasteful number, since it uses less digits than its factorization.

42276645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40881 (or 40878 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 42276645 is about 6502.0492923385. The cubic root of 42276645 is about 348.3641896818.

The spelling of 42276645 in words is "forty-two million, two hundred seventy-six thousand, six hundred forty-five".