1142976047 has 4 divisors (see below), whose sum is σ = 1146251400. Its totient is φ = 1139700696.

The previous prime is 1142976041. The next prime is 1142976061. The reversal of 1142976047 is 7406792411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7406792411 = 20731 ⋅357281.

It is a cyclic number.

It is not a de Polignac number, because 1142976047 - 2¹⁴ = 1142959663 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1142975995 and 1142976013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142976041) 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, 1637153 + ... + 1637850.

It is an arithmetic number, because the mean of its divisors is an integer number (286562850).

Almost surely, 2^1142976047 is an apocalyptic number.

1142976047 is a deficient number, since it is larger than the sum of its proper divisors (3275353).

1142976047 is an equidigital number, since it uses as much as digits as its factorization.

1142976047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3275352.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 1142976047 is about 33807.9287593902. The cubic root of 1142976047 is about 1045.5521747761.

The spelling of 1142976047 in words is "one billion, one hundred forty-two million, nine hundred seventy-six thousand, forty-seven".