100722434 has 4 divisors (see below), whose sum is σ = 151083654. Its totient is φ = 50361216.

The previous prime is 100722421. The next prime is 100722443. The reversal of 100722434 is 434227001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 80156209 + 20566225 = 8953^2 + 4535^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25180607 + ... + 25180610.

Almost surely, 2^100722434 is an apocalyptic number.

100722434 is a deficient number, since it is larger than the sum of its proper divisors (50361220).

100722434 is an equidigital number, since it uses as much as digits as its factorization.

100722434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50361219.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 100722434 is about 10036.0566957346. The cubic root of 100722434 is about 465.2739496464.

Adding to 100722434 its reverse (434227001), we get a palindrome (534949435).

The spelling of 100722434 in words is "one hundred million, seven hundred twenty-two thousand, four hundred thirty-four".