780142 has 8 divisors (see below), whose sum is σ = 1276632. Its totient is φ = 354600.

The previous prime is 780127. The next prime is 780163. The reversal of 780142 is 241087.

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

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 35461 = 780142 / (7 + 8 + 0 + 1 + 4 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17709 + ... + 17752.

It is an arithmetic number, because the mean of its divisors is an integer number (159579).

2⁷⁸⁰¹⁴² is an apocalyptic number.

780142 is a deficient number, since it is larger than the sum of its proper divisors (496490).

780142 is a wasteful number, since it uses less digits than its factorization.

780142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35474.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 780142 is about 883.2564746437. The cubic root of 780142 is about 92.0572265260.

The spelling of 780142 in words is "seven hundred eighty thousand, one hundred forty-two".