1420021342 has 4 divisors (see below), whose sum is σ = 2130032016. Its totient is φ = 710010670.

The previous prime is 1420021333. The next prime is 1420021391. The reversal of 1420021342 is 2431200241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2431200241 = 457 ⋅5319913.

It is a super-2 number, since 2×1420021342² = 4032921223470961928, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 355005334 + ... + 355005337.

It is an arithmetic number, because the mean of its divisors is an integer number (532508004).

Almost surely, 2^1420021342 is an apocalyptic number.

1420021342 is a deficient number, since it is larger than the sum of its proper divisors (710010674).

1420021342 is an equidigital number, since it uses as much as digits as its factorization.

1420021342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710010673.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1420021342 is about 37683.1705407069. The cubic root of 1420021342 is about 1123.9964956219.

Adding to 1420021342 its reverse (2431200241), we get a palindrome (3851221583).

The spelling of 1420021342 in words is "one billion, four hundred twenty million, twenty-one thousand, three hundred forty-two".