42451347 has 8 divisors (see below), whose sum is σ = 57151744. Its totient is φ = 28025928.

The previous prime is 42451327. The next prime is 42451349. The reversal of 42451347 is 74315424.

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

It is not a de Polignac number, because 42451347 - 2⁷ = 42451219 is a prime.

It is a super-2 number, since 2×42451347² = 3604233724228818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42451349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68383 + ... + 69000.

It is an arithmetic number, because the mean of its divisors is an integer number (7143968).

Almost surely, 2^42451347 is an apocalyptic number.

42451347 is a deficient number, since it is larger than the sum of its proper divisors (14700397).

42451347 is a wasteful number, since it uses less digits than its factorization.

42451347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137489.

The product of its digits is 13440, while the sum is 30.

The square root of 42451347 is about 6515.4698218931. The cubic root of 42451347 is about 348.8433847633.

The spelling of 42451347 in words is "forty-two million, four hundred fifty-one thousand, three hundred forty-seven".