1187429642 has 32 divisors (see below), whose sum is σ = 2144179200. Its totient is φ = 492473520.

The previous prime is 1187429603. The next prime is 1187429653. The reversal of 1187429642 is 2469247811.

It is a junction number, because it is equal to n+sod(n) for n = 1187429593 and 1187429602.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6653 + ... + 49184.

It is an arithmetic number, because the mean of its divisors is an integer number (67005600).

Almost surely, 2^1187429642 is an apocalyptic number.

1187429642 is a deficient number, since it is larger than the sum of its proper divisors (956749558).

1187429642 is an equidigital number, since it uses as much as digits as its factorization.

1187429642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55891 (or 55877 counting only the distinct ones).

The product of its digits is 193536, while the sum is 44.

The square root of 1187429642 is about 34459.1010039438. The cubic root of 1187429642 is about 1058.9349816804.

The spelling of 1187429642 in words is "one billion, one hundred eighty-seven million, four hundred twenty-nine thousand, six hundred forty-two".