78042453 has 8 divisors (see below), whose sum is σ = 104160000. Its totient is φ = 51976608.

The previous prime is 78042449. The next prime is 78042487. The reversal of 78042453 is 35424087.

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

It is not a de Polignac number, because 78042453 - 2² = 78042449 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78042403) 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, 9253 + ... + 15546.

It is an arithmetic number, because the mean of its divisors is an integer number (13020000).

Almost surely, 2^78042453 is an apocalyptic number.

It is an amenable number.

78042453 is a deficient number, since it is larger than the sum of its proper divisors (26117547).

78042453 is a wasteful number, since it uses less digits than its factorization.

78042453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25851.

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 78042453 is about 8834.1639672354. The cubic root of 78042453 is about 427.3433699993.

The spelling of 78042453 in words is "seventy-eight million, forty-two thousand, four hundred fifty-three".