78241145 has 8 divisors (see below), whose sum is σ = 98831040. Its totient is φ = 59298480.

The previous prime is 78241109. The next prime is 78241151. The reversal of 78241145 is 54114287.

It is a happy number.

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

It is not a de Polignac number, because 78241145 - 2¹⁶ = 78175609 is a prime.

It is a super-2 number, since 2×78241145² = 12243353541822050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 411701 + ... + 411890.

It is an arithmetic number, because the mean of its divisors is an integer number (12353880).

Almost surely, 2^78241145 is an apocalyptic number.

It is an amenable number.

78241145 is a deficient number, since it is larger than the sum of its proper divisors (20589895).

78241145 is a wasteful number, since it uses less digits than its factorization.

78241145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823615.

The product of its digits is 8960, while the sum is 32.

The square root of 78241145 is about 8845.4024781239. The cubic root of 78241145 is about 427.7057272754.

The spelling of 78241145 in words is "seventy-eight million, two hundred forty-one thousand, one hundred forty-five".