1142621405 has 8 divisors (see below), whose sum is σ = 1415376384. Its totient is φ = 884610000.

The previous prime is 1142621387. The next prime is 1142621423. The reversal of 1142621405 is 5041262411.

It is an interprime number because it is at equal distance from previous prime (1142621387) and next prime (1142621423).

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

It is not a de Polignac number, because 1142621405 - 2⁶ = 1142621341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3685721 + ... + 3686030.

It is an arithmetic number, because the mean of its divisors is an integer number (176922048).

Almost surely, 2^1142621405 is an apocalyptic number.

It is an amenable number.

1142621405 is a deficient number, since it is larger than the sum of its proper divisors (272754979).

1142621405 is an equidigital number, since it uses as much as digits as its factorization.

1142621405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7371787.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 1142621405 is about 33802.6833993989. The cubic root of 1142621405 is about 1045.4440257989. Note that the first 3 decimals are identical.

Adding to 1142621405 its reverse (5041262411), we get a palindrome (6183883816).

The spelling of 1142621405 in words is "one billion, one hundred forty-two million, six hundred twenty-one thousand, four hundred five".