1231401442 has 8 divisors (see below), whose sum is σ = 1874671056. Its totient is φ = 606511092.

The previous prime is 1231401407. The next prime is 1231401467. The reversal of 1231401442 is 2441041321.

It is a happy number.

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

It is a super-2 number, since 2×1231401442² = 3032699022719358728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4594648 + ... + 4594915.

It is an arithmetic number, because the mean of its divisors is an integer number (234333882).

Almost surely, 2^1231401442 is an apocalyptic number.

1231401442 is a deficient number, since it is larger than the sum of its proper divisors (643269614).

1231401442 is an equidigital number, since it uses as much as digits as its factorization.

1231401442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9189632.

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 1231401442 is about 35091.3300118420. The cubic root of 1231401442 is about 1071.8480428266.

Adding to 1231401442 its reverse (2441041321), we get a palindrome (3672442763).

The spelling of 1231401442 in words is "one billion, two hundred thirty-one million, four hundred one thousand, four hundred forty-two".