1142991253 has 8 divisors (see below), whose sum is σ = 1150716672. Its totient is φ = 1135276656.

The previous prime is 1142991251. The next prime is 1142991259. The reversal of 1142991253 is 3521992411.

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 1142991253 - 2¹ = 1142991251 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142991251) 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 7 ways as a sum of consecutive naturals, for example, 407251 + ... + 410047.

It is an arithmetic number, because the mean of its divisors is an integer number (143839584).

Almost surely, 2^1142991253 is an apocalyptic number.

It is an amenable number.

1142991253 is a deficient number, since it is larger than the sum of its proper divisors (7725419).

1142991253 is a wasteful number, since it uses less digits than its factorization.

1142991253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5411.

The product of its digits is 19440, while the sum is 37.

The square root of 1142991253 is about 33808.1536467166. The cubic root of 1142991253 is about 1045.5568113842.

The spelling of 1142991253 in words is "one billion, one hundred forty-two million, nine hundred ninety-one thousand, two hundred fifty-three".