1420394623 has 4 divisors (see below), whose sum is σ = 1420518400. Its totient is φ = 1420270848.

The previous prime is 1420394603. The next prime is 1420394663. The reversal of 1420394623 is 3264930241.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3264930241 = 193 ⋅16916737.

It is a cyclic number.

It is not a de Polignac number, because 1420394623 - 2⁹ = 1420394111 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 (1420394603) 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, 42690 + ... + 68287.

It is an arithmetic number, because the mean of its divisors is an integer number (355129600).

Almost surely, 2^1420394623 is an apocalyptic number.

1420394623 is a deficient number, since it is larger than the sum of its proper divisors (123777).

1420394623 is a wasteful number, since it uses less digits than its factorization.

1420394623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123776.

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 1420394623 is about 37688.1231026434. The cubic root of 1420394623 is about 1124.0949753102.

The spelling of 1420394623 in words is "one billion, four hundred twenty million, three hundred ninety-four thousand, six hundred twenty-three".