42104455 has 4 divisors (see below), whose sum is σ = 50525352. Its totient is φ = 33683560.

The previous prime is 42104449. The next prime is 42104473. The reversal of 42104455 is 55440124.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 42104455 - 2⁷ = 42104327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4210441 + ... + 4210450.

It is an arithmetic number, because the mean of its divisors is an integer number (12631338).

Almost surely, 2^42104455 is an apocalyptic number.

42104455 is a deficient number, since it is larger than the sum of its proper divisors (8420897).

42104455 is an equidigital number, since it uses as much as digits as its factorization.

42104455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8420896.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 42104455 is about 6488.7945721837. The cubic root of 42104455 is about 347.8905912944.

Adding to 42104455 its reverse (55440124), we get a palindrome (97544579).

The spelling of 42104455 in words is "forty-two million, one hundred four thousand, four hundred fifty-five".