42546545 has 8 divisors (see below), whose sum is σ = 52019496. Its totient is φ = 33394816.

The previous prime is 42546533. The next prime is 42546557. The reversal of 42546545 is 54564524.

It is an interprime number because it is at equal distance from previous prime (42546533) and next prime (42546557).

It can be written as a sum of positive squares in 4 ways, for example, as 14371681 + 28174864 = 3791^2 + 5308^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 42546545 - 2⁸ = 42546289 is a prime.

It is a Duffinian number.

It is a Curzon number.

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, 80012 + ... + 80541.

It is an arithmetic number, because the mean of its divisors is an integer number (6502437).

Almost surely, 2^42546545 is an apocalyptic number.

It is an amenable number.

42546545 is a deficient number, since it is larger than the sum of its proper divisors (9472951).

42546545 is a wasteful number, since it uses less digits than its factorization.

42546545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160611.

The product of its digits is 96000, while the sum is 35.

The square root of 42546545 is about 6522.7712668773. The cubic root of 42546545 is about 349.1039528542.

The spelling of 42546545 in words is "forty-two million, five hundred forty-six thousand, five hundred forty-five".