42255454 has 4 divisors (see below), whose sum is σ = 63383184. Its totient is φ = 21127726.

The previous prime is 42255427. The next prime is 42255463. The reversal of 42255454 is 45455224.

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

It is a super-2 number, since 2×42255454² = 3571046785492232, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10563862 + ... + 10563865.

It is an arithmetic number, because the mean of its divisors is an integer number (15845796).

Almost surely, 2^42255454 is an apocalyptic number.

42255454 is a deficient number, since it is larger than the sum of its proper divisors (21127730).

42255454 is a wasteful number, since it uses less digits than its factorization.

42255454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21127729.

The product of its digits is 32000, while the sum is 31.

The square root of 42255454 is about 6500.4195249230. The cubic root of 42255454 is about 348.3059745663.

The spelling of 42255454 in words is "forty-two million, two hundred fifty-five thousand, four hundred fifty-four".