42454546 has 8 divisors (see below), whose sum is σ = 64050444. Its totient is φ = 21104400.

The previous prime is 42454523. The next prime is 42454547. The reversal of 42454546 is 64545424.

It can be written as a sum of positive squares in 2 ways, for example, as 30969225 + 11485321 = 5565^2 + 3389^2 .

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

It is a super-2 number, since 2×42454546² = 3604776952132232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (42454547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61005 + ... + 61696.

Almost surely, 2^42454546 is an apocalyptic number.

42454546 is a deficient number, since it is larger than the sum of its proper divisors (21595898).

42454546 is a wasteful number, since it uses less digits than its factorization.

42454546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122876.

The product of its digits is 76800, while the sum is 34.

The square root of 42454546 is about 6515.7153099257. The cubic root of 42454546 is about 348.8521471234.

The spelling of 42454546 in words is "forty-two million, four hundred fifty-four thousand, five hundred forty-six".