1142744477 has 4 divisors (see below), whose sum is σ = 1305993696. Its totient is φ = 979495260.

The previous prime is 1142744467. The next prime is 1142744483. The reversal of 1142744477 is 7744472411.

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 a cyclic number.

It is not a de Polignac number, because 1142744477 - 2¹⁸ = 1142482333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142744467) 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, 81624599 + ... + 81624612.

It is an arithmetic number, because the mean of its divisors is an integer number (326498424).

Almost surely, 2^1142744477 is an apocalyptic number.

It is an amenable number.

1142744477 is a deficient number, since it is larger than the sum of its proper divisors (163249219).

1142744477 is an equidigital number, since it uses as much as digits as its factorization.

1142744477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163249218.

The product of its digits is 175616, while the sum is 41.

The square root of 1142744477 is about 33804.5037975711. The cubic root of 1142744477 is about 1045.4815594525.

The spelling of 1142744477 in words is "one billion, one hundred forty-two million, seven hundred forty-four thousand, four hundred seventy-seven".