42105554 has 8 divisors (see below), whose sum is σ = 63210108. Its totient is φ = 21035520.

The previous prime is 42105523. The next prime is 42105563. The reversal of 42105554 is 45550124.

It can be written as a sum of positive squares in 2 ways, for example, as 36929929 + 5175625 = 6077^2 + 2275^2 .

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

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, 5327 + ... + 10610.

Almost surely, 2^42105554 is an apocalyptic number.

42105554 is a deficient number, since it is larger than the sum of its proper divisors (21104554).

42105554 is a wasteful number, since it uses less digits than its factorization.

42105554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17260.

The product of its (nonzero) digits is 4000, while the sum is 26.

The square root of 42105554 is about 6488.8792560811. The cubic root of 42105554 is about 347.8936181193.

Adding to 42105554 its reverse (45550124), we get a palindrome (87655678).

The spelling of 42105554 in words is "forty-two million, one hundred five thousand, five hundred fifty-four".