1142312069 has 4 divisors (see below), whose sum is σ = 1142783244. Its totient is φ = 1141840896.

The previous prime is 1142312057. The next prime is 1142312077. The reversal of 1142312069 is 9602132411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9602132411 = 37529 ⋅255859.

It can be written as a sum of positive squares in 2 ways, for example, as 1028035969 + 114276100 = 32063^2 + 10690^2 .

It is a cyclic number.

It is not a de Polignac number, because 1142312069 - 2¹² = 1142307973 is a prime.

It is a super-2 number, since 2×1142312069² = 2609753725966121522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142312099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231932 + ... + 236805.

It is an arithmetic number, because the mean of its divisors is an integer number (285695811).

Almost surely, 2^1142312069 is an apocalyptic number.

It is an amenable number.

1142312069 is a deficient number, since it is larger than the sum of its proper divisors (471175).

1142312069 is an equidigital number, since it uses as much as digits as its factorization.

1142312069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471174.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 1142312069 is about 33798.1074766029. The cubic root of 1142312069 is about 1045.3496747276.

The spelling of 1142312069 in words is "one billion, one hundred forty-two million, three hundred twelve thousand, sixty-nine".