42104551 has 8 divisors (see below), whose sum is σ = 44883200. Its totient is φ = 39382200.

The previous prime is 42104539. The next prime is 42104593. The reversal of 42104551 is 15540124.

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 42104551 - 2⁵ = 42104519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42104521) 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, 12525 + ... + 15526.

It is an arithmetic number, because the mean of its divisors is an integer number (5610400).

Almost surely, 2^42104551 is an apocalyptic number.

42104551 is a deficient number, since it is larger than the sum of its proper divisors (2778649).

42104551 is a wasteful number, since it uses less digits than its factorization.

42104551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28149.

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 42104551 is about 6488.8019695472. The cubic root of 42104551 is about 347.8908556961.

Adding to 42104551 its reverse (15540124), we get a palindrome (57644675).

The spelling of 42104551 in words is "forty-two million, one hundred four thousand, five hundred fifty-one".