781120430 has 16 divisors (see below), whose sum is σ = 1406584224. Its totient is φ = 312322080.

The previous prime is 781120429. The next prime is 781120451. The reversal of 781120430 is 34021187.

It is a super-2 number, since 2×781120430² = 1220298252326769800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 781120430.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12704 + ... + 41516.

It is an arithmetic number, because the mean of its divisors is an integer number (87911514).

Almost surely, 2^781120430 is an apocalyptic number.

781120430 is a deficient number, since it is larger than the sum of its proper divisors (625463794).

781120430 is a wasteful number, since it uses less digits than its factorization.

781120430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31531.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 781120430 is about 27948.5318040143. The cubic root of 781120430 is about 920.9569555825.

The spelling of 781120430 in words is "seven hundred eighty-one million, one hundred twenty thousand, four hundred thirty".