42455091 has 8 divisors (see below), whose sum is σ = 64693504. Its totient is φ = 24260040.

The previous prime is 42455087. The next prime is 42455107. The reversal of 42455091 is 19055424.

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

It is not a de Polignac number, because 42455091 - 2² = 42455087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42455011) 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, 1010815 + ... + 1010856.

It is an arithmetic number, because the mean of its divisors is an integer number (8086688).

Almost surely, 2^42455091 is an apocalyptic number.

42455091 is a deficient number, since it is larger than the sum of its proper divisors (22238413).

42455091 is a wasteful number, since it uses less digits than its factorization.

42455091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2021681.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 42455091 is about 6515.7571317538. The cubic root of 42455091 is about 348.8536398854.

The spelling of 42455091 in words is "forty-two million, four hundred fifty-five thousand, ninety-one".