42454529 has 4 divisors (see below), whose sum is σ = 45720276. Its totient is φ = 39188784.

The previous prime is 42454523. The next prime is 42454547. The reversal of 42454529 is 92545424.

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

It can be written as a sum of positive squares in 2 ways, for example, as 28912129 + 13542400 = 5377^2 + 3680^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42454529 is a prime.

It is a super-2 number, since 2×42454529² = 3604774065223682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42454523) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1632854 + ... + 1632879.

It is an arithmetic number, because the mean of its divisors is an integer number (11430069).

Almost surely, 2^42454529 is an apocalyptic number.

It is an amenable number.

42454529 is a deficient number, since it is larger than the sum of its proper divisors (3265747).

42454529 is a wasteful number, since it uses less digits than its factorization.

42454529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3265746.

The product of its digits is 57600, while the sum is 35.

The square root of 42454529 is about 6515.7140053873. The cubic root of 42454529 is about 348.8521005599.

The spelling of 42454529 in words is "forty-two million, four hundred fifty-four thousand, five hundred twenty-nine".