78142050 has 96 divisors (see below), whose sum is σ = 246115200. Its totient is φ = 17858880.

The previous prime is 78142049. The next prime is 78142067. The reversal of 78142050 is 5024187.

It is a super-2 number, since 2×78142050² = 12212359956405000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 5316 + ... + 13584.

It is an arithmetic number, because the mean of its divisors is an integer number (2563700).

Almost surely, 2^78142050 is an apocalyptic number.

78142050 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 78142050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123057600).

78142050 is an abundant number, since it is smaller than the sum of its proper divisors (167973150).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78142050 is a wasteful number, since it uses less digits than its factorization.

78142050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8297 (or 8286 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 78142050 is about 8839.7992058644. The cubic root of 78142050 is about 427.5250831697.

The spelling of 78142050 in words is "seventy-eight million, one hundred forty-two thousand, fifty".