1430420421 has 4 divisors (see below), whose sum is σ = 1907227232. Its totient is φ = 953613612.

The previous prime is 1430420399. The next prime is 1430420441. The reversal of 1430420421 is 1240240341.

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 not a de Polignac number, because 1430420421 - 2¹⁵ = 1430387653 is a prime.

It is a super-2 number, since 2×1430420421² = 4092205161627634482, 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 (1430420441) 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, 238403401 + ... + 238403406.

It is an arithmetic number, because the mean of its divisors is an integer number (476806808).

Almost surely, 2^1430420421 is an apocalyptic number.

It is an amenable number.

1430420421 is a deficient number, since it is larger than the sum of its proper divisors (476806811).

1430420421 is an equidigital number, since it uses as much as digits as its factorization.

1430420421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476806810.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1430420421 is about 37820.8992621804. The cubic root of 1430420421 is about 1126.7335698496.

Adding to 1430420421 its reverse (1240240341), we get a palindrome (2670660762).

The spelling of 1430420421 in words is "one billion, four hundred thirty million, four hundred twenty thousand, four hundred twenty-one".