42945454 has 4 divisors (see below), whose sum is σ = 64418184. Its totient is φ = 21472726.

The previous prime is 42945443. The next prime is 42945467. The reversal of 42945454 is 45454924.

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

It is a super-2 number, since 2×42945454² = 3688624038532232, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10736362 + ... + 10736365.

It is an arithmetic number, because the mean of its divisors is an integer number (16104546).

Almost surely, 2^42945454 is an apocalyptic number.

42945454 is a deficient number, since it is larger than the sum of its proper divisors (21472730).

42945454 is a wasteful number, since it uses less digits than its factorization.

42945454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21472729.

The product of its digits is 115200, while the sum is 37.

The square root of 42945454 is about 6553.2781109915. The cubic root of 42945454 is about 350.1916066509.

The spelling of 42945454 in words is "forty-two million, nine hundred forty-five thousand, four hundred fifty-four".