1422342021 has 4 divisors (see below), whose sum is σ = 1896456032. Its totient is φ = 948228012.

The previous prime is 1422342007. The next prime is 1422342023. The reversal of 1422342021 is 1202432241.

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 1422342021 - 2¹⁸ = 1422079877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1422342023) 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, 237057001 + ... + 237057006.

It is an arithmetic number, because the mean of its divisors is an integer number (474114008).

Almost surely, 2^1422342021 is an apocalyptic number.

It is an amenable number.

1422342021 is a deficient number, since it is larger than the sum of its proper divisors (474114011).

1422342021 is an equidigital number, since it uses as much as digits as its factorization.

1422342021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474114010.

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

The square root of 1422342021 is about 37713.9499522392. The cubic root of 1422342021 is about 1124.6084618707.

Adding to 1422342021 its reverse (1202432241), we get a palindrome (2624774262).

The spelling of 1422342021 in words is "one billion, four hundred twenty-two million, three hundred forty-two thousand, twenty-one".