1130139421 has 4 divisors (see below), whose sum is σ = 1135495744. Its totient is φ = 1124783100.

The previous prime is 1130139419. The next prime is 1130139427. The reversal of 1130139421 is 1249310311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1130139421 - 2¹ = 1130139419 is a prime.

It is a super-2 number, since 2×1130139421² = 2554430221796430482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1130139427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2677845 + ... + 2678266.

It is an arithmetic number, because the mean of its divisors is an integer number (283873936).

Almost surely, 2^1130139421 is an apocalyptic number.

It is an amenable number.

1130139421 is a deficient number, since it is larger than the sum of its proper divisors (5356323).

1130139421 is an equidigital number, since it uses as much as digits as its factorization.

1130139421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5356322.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 1130139421 is about 33617.5463262862. The cubic root of 1130139421 is about 1041.6232727680.

Adding to 1130139421 its reverse (1249310311), we get a palindrome (2379449732).

The spelling of 1130139421 in words is "one billion, one hundred thirty million, one hundred thirty-nine thousand, four hundred twenty-one".