780620142 has 16 divisors (see below), whose sum is σ = 1564801920. Its totient is φ = 259613112.

The previous prime is 780620129. The next prime is 780620143. The reversal of 780620142 is 241026087.

It is a super-2 number, since 2×780620142² = 1218735612192200328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780620143) 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, 145548 + ... + 150815.

It is an arithmetic number, because the mean of its divisors is an integer number (97800120).

Almost surely, 2^780620142 is an apocalyptic number.

780620142 is an abundant number, since it is smaller than the sum of its proper divisors (784181778).

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

780620142 is a wasteful number, since it uses less digits than its factorization.

780620142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296807.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 780620142 is about 27939.5802044340. The cubic root of 780620142 is about 920.7602969984.

The spelling of 780620142 in words is "seven hundred eighty million, six hundred twenty thousand, one hundred forty-two".