1142621431 has 16 divisors (see below), whose sum is σ = 1361226240. Its totient is φ = 938377440.

The previous prime is 1142621423. The next prime is 1142621437. The reversal of 1142621431 is 1341262411.

It is not a de Polignac number, because 1142621431 - 2³ = 1142621423 is a prime.

It is a super-3 number, since 3×1142621431³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 1142621396 and 1142621405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142621437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5110 + ... + 48076.

It is an arithmetic number, because the mean of its divisors is an integer number (85076640).

Almost surely, 2^1142621431 is an apocalyptic number.

1142621431 is a deficient number, since it is larger than the sum of its proper divisors (218604809).

1142621431 is a wasteful number, since it uses less digits than its factorization.

1142621431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43134.

The product of its digits is 1152, while the sum is 25.

The square root of 1142621431 is about 33802.6837839838. The cubic root of 1142621431 is about 1045.4440337285. Note that the first 3 decimals are identical.

Adding to 1142621431 its reverse (1341262411), we get a palindrome (2483883842).

The spelling of 1142621431 in words is "one billion, one hundred forty-two million, six hundred twenty-one thousand, four hundred thirty-one".