102791434 has 8 divisors (see below), whose sum is σ = 154445508. Its totient is φ = 51309600.

The previous prime is 102791431. The next prime is 102791477. The reversal of 102791434 is 434197201.

It can be written as a sum of positive squares in 2 ways, for example, as 89359209 + 13432225 = 9453^2 + 3665^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 102791396 and 102791405.

It is not an unprimeable number, because it can be changed into a prime (102791431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41557 + ... + 43960.

Almost surely, 2^102791434 is an apocalyptic number.

102791434 is a deficient number, since it is larger than the sum of its proper divisors (51654074).

102791434 is an equidigital number, since it uses as much as digits as its factorization.

102791434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86120.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 102791434 is about 10138.6110488567. The cubic root of 102791434 is about 468.4382051199.

The spelling of 102791434 in words is "one hundred two million, seven hundred ninety-one thousand, four hundred thirty-four".