1142635601 has 8 divisors (see below), whose sum is σ = 1171455264. Its totient is φ = 1113861280.

The previous prime is 1142635597. The next prime is 1142635631. The reversal of 1142635601 is 1065362411.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1142635601 - 2² = 1142635597 is a prime.

It is a super-2 number, since 2×1142635601² = 2611232233345262402, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1142635631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42926 + ... + 64248.

It is an arithmetic number, because the mean of its divisors is an integer number (146431908).

Almost surely, 2^1142635601 is an apocalyptic number.

It is an amenable number.

1142635601 is a deficient number, since it is larger than the sum of its proper divisors (28819663).

1142635601 is a wasteful number, since it uses less digits than its factorization.

1142635601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22671.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1142635601 is about 33802.8933820760. The cubic root of 1142635601 is about 1045.4483553351.

The spelling of 1142635601 in words is "one billion, one hundred forty-two million, six hundred thirty-five thousand, six hundred one".