130628842 has 4 divisors (see below), whose sum is σ = 195943266. Its totient is φ = 65314420.

The previous prime is 130628831. The next prime is 130628851. The reversal of 130628842 is 248826031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 248826031 = 11699 ⋅21269.

It can be written as a sum of positive squares in only one way, i.e., 78659161 + 51969681 = 8869^2 + 7209^2 .

It is a junction number, because it is equal to n+sod(n) for n = 130628798 and 130628807.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32657209 + ... + 32657212.

Almost surely, 2^130628842 is an apocalyptic number.

130628842 is a deficient number, since it is larger than the sum of its proper divisors (65314424).

130628842 is an equidigital number, since it uses as much as digits as its factorization.

130628842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65314423.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 130628842 is about 11429.2975287198. The cubic root of 130628842 is about 507.3952052948.

It can be divided in two parts, 13062 and 8842, that added together give a square (21904 = 148²).

The spelling of 130628842 in words is "one hundred thirty million, six hundred twenty-eight thousand, eight hundred forty-two".