1442340231 has 8 divisors (see below), whose sum is σ = 2036245104. Its totient is φ = 904997760.

The previous prime is 1442340199. The next prime is 1442340287. The reversal of 1442340231 is 1320432441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1442340231 - 2⁵ = 1442340199 is a prime.

It is a super-2 number, since 2×1442340231² = 4160690683922266722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1442348231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14140540 + ... + 14140641.

It is an arithmetic number, because the mean of its divisors is an integer number (254530638).

Almost surely, 2^1442340231 is an apocalyptic number.

1442340231 is a deficient number, since it is larger than the sum of its proper divisors (593904873).

1442340231 is a wasteful number, since it uses less digits than its factorization.

1442340231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28281201.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1442340231 is about 37978.1546550119. The cubic root of 1442340231 is about 1129.8546373695.

Adding to 1442340231 its reverse (1320432441), we get a palindrome (2762772672).

The spelling of 1442340231 in words is "one billion, four hundred forty-two million, three hundred forty thousand, two hundred thirty-one".