1142949 has 4 divisors (see below), whose sum is σ = 1523936. Its totient is φ = 761964.

The previous prime is 1142941. The next prime is 1142959. The reversal of 1142949 is 9492411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9492411 = 3 ⋅3164137.

It is not a de Polignac number, because 1142949 - 2³ = 1142941 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190489 + ... + 190494.

It is an arithmetic number, because the mean of its divisors is an integer number (380984).

2^1142949 is an apocalyptic number.

It is an amenable number.

1142949 is a deficient number, since it is larger than the sum of its proper divisors (380987).

1142949 is an equidigital number, since it uses as much as digits as its factorization.

1142949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380986.

The product of its digits is 2592, while the sum is 30.

The square root of 1142949 is about 1069.0879290311. The cubic root of 1142949 is about 104.5543927513.

The spelling of 1142949 in words is "one million, one hundred forty-two thousand, nine hundred forty-nine".