1423321142 has 4 divisors (see below), whose sum is σ = 2134981716. Its totient is φ = 711660570.

The previous prime is 1423321139. The next prime is 1423321147. The reversal of 1423321142 is 2411233241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2411233241 = 1693 ⋅1424237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423321147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 355830284 + ... + 355830287.

It is an arithmetic number, because the mean of its divisors is an integer number (533745429).

Almost surely, 2^1423321142 is an apocalyptic number.

1423321142 is a deficient number, since it is larger than the sum of its proper divisors (711660574).

1423321142 is an equidigital number, since it uses as much as digits as its factorization.

1423321142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711660573.

The product of its digits is 1152, while the sum is 23.

The square root of 1423321142 is about 37726.9286054404. The cubic root of 1423321142 is about 1124.8664577618.

Adding to 1423321142 its reverse (2411233241), we get a palindrome (3834554383).

The spelling of 1423321142 in words is "one billion, four hundred twenty-three million, three hundred twenty-one thousand, one hundred forty-two".