1142262649 has 8 divisors (see below), whose sum is σ = 1246351680. Its totient is φ = 1038214800.

The previous prime is 1142262619. The next prime is 1142262661. The reversal of 1142262649 is 9462622411.

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 1142262649 - 2¹⁹ = 1141738361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142262619) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91612 + ... + 103330.

It is an arithmetic number, because the mean of its divisors is an integer number (155793960).

Almost surely, 2^1142262649 is an apocalyptic number.

It is an amenable number.

1142262649 is a deficient number, since it is larger than the sum of its proper divisors (104089031).

1142262649 is a wasteful number, since it uses less digits than its factorization.

1142262649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20591.

The product of its digits is 41472, while the sum is 37.

The square root of 1142262649 is about 33797.3763626705. The cubic root of 1142262649 is about 1045.3345994759.

The spelling of 1142262649 in words is "one billion, one hundred forty-two million, two hundred sixty-two thousand, six hundred forty-nine".