1434420021 has 4 divisors (see below), whose sum is σ = 1912560032. Its totient is φ = 956280012.

The previous prime is 1434420017. The next prime is 1434420023. The reversal of 1434420021 is 1200244341.

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 1434420021 - 2² = 1434420017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1434420021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1434420023) 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, 239070001 + ... + 239070006.

It is an arithmetic number, because the mean of its divisors is an integer number (478140008).

Almost surely, 2^1434420021 is an apocalyptic number.

It is an amenable number.

1434420021 is a deficient number, since it is larger than the sum of its proper divisors (478140011).

1434420021 is an equidigital number, since it uses as much as digits as its factorization.

1434420021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478140010.

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

The square root of 1434420021 is about 37873.7378799611. The cubic root of 1434420021 is about 1127.7827462171.

Adding to 1434420021 its reverse (1200244341), we get a palindrome (2634664362).

The spelling of 1434420021 in words is "one billion, four hundred thirty-four million, four hundred twenty thousand, twenty-one".