1142149223 has 4 divisors (see below), whose sum is σ = 1202262360. Its totient is φ = 1082036088.

The previous prime is 1142149153. The next prime is 1142149231. The reversal of 1142149223 is 3229412411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3229412411 = 5051 ⋅639361.

It is a cyclic number.

It is not a de Polignac number, because 1142149223 - 2¹⁸ = 1141887079 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 (1142149243) 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 3 ways as a sum of consecutive naturals, for example, 30056540 + ... + 30056577.

It is an arithmetic number, because the mean of its divisors is an integer number (300565590).

Almost surely, 2^1142149223 is an apocalyptic number.

1142149223 is a deficient number, since it is larger than the sum of its proper divisors (60113137).

1142149223 is an equidigital number, since it uses as much as digits as its factorization.

1142149223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60113136.

The product of its digits is 3456, while the sum is 29.

The square root of 1142149223 is about 33795.6982913506. The cubic root of 1142149223 is about 1045.2999979631.

The spelling of 1142149223 in words is "one billion, one hundred forty-two million, one hundred forty-nine thousand, two hundred twenty-three".