1142939901 has 4 divisors (see below), whose sum is σ = 1523919872. Its totient is φ = 761959932.

The previous prime is 1142939891. The next prime is 1142939911. The reversal of 1142939901 is 1099392411.

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.

It is an interprime number because it is at equal distance from previous prime (1142939891) and next prime (1142939911).

It is not a de Polignac number, because 1142939901 - 2⁷ = 1142939773 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1142939901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142939911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190489981 + ... + 190489986.

It is an arithmetic number, because the mean of its divisors is an integer number (380979968).

Almost surely, 2^1142939901 is an apocalyptic number.

It is an amenable number.

1142939901 is a deficient number, since it is larger than the sum of its proper divisors (380979971).

1142939901 is an equidigital number, since it uses as much as digits as its factorization.

1142939901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380979970.

The product of its (nonzero) digits is 17496, while the sum is 39.

The square root of 1142939901 is about 33807.3941764224. The cubic root of 1142939901 is about 1045.5411529857.

The spelling of 1142939901 in words is "one billion, one hundred forty-two million, nine hundred thirty-nine thousand, nine hundred one".