111642629 has 6 divisors (see below), whose sum is σ = 129870054. Its totient is φ = 95693640.

The previous prime is 111642617. The next prime is 111642637. The reversal of 111642629 is 926246111.

It can be written as a sum of positive squares in only one way, i.e., 108201604 + 3441025 = 10402^2 + 1855^2 .

It is not a de Polignac number, because 111642629 - 2¹⁶ = 111577093 is a prime.

It is a super-2 number, since 2×111642629² = 24928153220063282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111642595 and 111642604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111642679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1139162 + ... + 1139259.

It is an arithmetic number, because the mean of its divisors is an integer number (21645009).

Almost surely, 2^111642629 is an apocalyptic number.

It is an amenable number.

111642629 is a deficient number, since it is larger than the sum of its proper divisors (18227425).

111642629 is an equidigital number, since it uses as much as digits as its factorization.

111642629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2278435 (or 2278428 counting only the distinct ones).

The product of its digits is 5184, while the sum is 32.

The square root of 111642629 is about 10566.1075614438. The cubic root of 111642629 is about 481.5152190989.

The spelling of 111642629 in words is "one hundred eleven million, six hundred forty-two thousand, six hundred twenty-nine".