78525142 has 16 divisors (see below), whose sum is σ = 125172432. Its totient is φ = 36817920.

The previous prime is 78525133. The next prime is 78525163. The reversal of 78525142 is 24152587.

It is a happy number.

78525142 is nontrivially palindromic in base 14.

It is a super-2 number, since 2×78525142² = 12332395852240328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 78525098 and 78525107.

It is a congruent number.

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, 5542 + ... + 13702.

It is an arithmetic number, because the mean of its divisors is an integer number (7823277).

Almost surely, 2^78525142 is an apocalyptic number.

78525142 is a deficient number, since it is larger than the sum of its proper divisors (46647290).

78525142 is a wasteful number, since it uses less digits than its factorization.

78525142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8463.

The product of its digits is 22400, while the sum is 34.

The square root of 78525142 is about 8861.4413048894. The cubic root of 78525142 is about 428.2225928936. Note that the first 3 decimals are identical.

The spelling of 78525142 in words is "seventy-eight million, five hundred twenty-five thousand, one hundred forty-two".