1442259169 has 4 divisors (see below), whose sum is σ = 1553202196. Its totient is φ = 1331316144.

The previous prime is 1442259167. The next prime is 1442259187. The reversal of 1442259169 is 9619522441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 121881600 + 1320377569 = 11040^2 + 36337^2 .

It is a cyclic number.

It is not a de Polignac number, because 1442259169 - 2¹ = 1442259167 is a prime.

It is a super-2 number, since 2×1442259169² = 4160223021129141122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1442259167) 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, 55471494 + ... + 55471519.

It is an arithmetic number, because the mean of its divisors is an integer number (388300549).

Almost surely, 2^1442259169 is an apocalyptic number.

It is an amenable number.

1442259169 is a deficient number, since it is larger than the sum of its proper divisors (110943027).

1442259169 is a wasteful number, since it uses less digits than its factorization.

1442259169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110943026.

The product of its digits is 155520, while the sum is 43.

The square root of 1442259169 is about 37977.0874212333. The cubic root of 1442259169 is about 1129.8334703821.

The spelling of 1442259169 in words is "one billion, four hundred forty-two million, two hundred fifty-nine thousand, one hundred sixty-nine".