1442505231 has 6 divisors (see below), whose sum is σ = 2083618680. Its totient is φ = 961670148.

The previous prime is 1442505221. The next prime is 1442505241. The reversal of 1442505231 is 1325052441.

1442505231 is a `hidden beast` number, since 1 + 4 + 425 + 0 + 5 + 231 = 666.

It is an interprime number because it is at equal distance from previous prime (1442505221) and next prime (1442505241).

It is not a de Polignac number, because 1442505231 - 2¹⁰ = 1442504207 is a prime.

It is a super-2 number, since 2×1442505231² = 4161642682924726722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1442505195 and 1442505204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442505221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 80139171 + ... + 80139188.

It is an arithmetic number, because the mean of its divisors is an integer number (347269780).

Almost surely, 2^1442505231 is an apocalyptic number.

1442505231 is a deficient number, since it is larger than the sum of its proper divisors (641113449).

1442505231 is a wasteful number, since it uses less digits than its factorization.

1442505231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160278365 (or 160278362 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1442505231 is about 37980.3268943278. The cubic root of 1442505231 is about 1129.8977198782.

Adding to 1442505231 its reverse (1325052441), we get a palindrome (2767557672).

The spelling of 1442505231 in words is "one billion, four hundred forty-two million, five hundred five thousand, two hundred thirty-one".