1186742642 has 4 divisors (see below), whose sum is σ = 1780113966. Its totient is φ = 593371320.

The previous prime is 1186742629. The next prime is 1186742653. The reversal of 1186742642 is 2462476811.

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., 783496081 + 403246561 = 27991^2 + 20081^2 .

It is a super-2 number, since 2×1186742642² = 2816716196682280328, 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 1186742642.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 296685659 + ... + 296685662.

Almost surely, 2^1186742642 is an apocalyptic number.

1186742642 is a deficient number, since it is larger than the sum of its proper divisors (593371324).

1186742642 is an equidigital number, since it uses as much as digits as its factorization.

1186742642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593371323.

The product of its digits is 129024, while the sum is 41.

The square root of 1186742642 is about 34449.1312227174. The cubic root of 1186742642 is about 1058.7307229324.

The spelling of 1186742642 in words is "one billion, one hundred eighty-six million, seven hundred forty-two thousand, six hundred forty-two".