1421201023 has 6 divisors (see below), whose sum is σ = 1562146712. Its totient is φ = 1292000820.

The previous prime is 1421201021. The next prime is 1421201059. The reversal of 1421201023 is 3201021241.

It is not a de Polignac number, because 1421201023 - 2¹ = 1421201021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1421200988 and 1421201006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421201021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5872611 + ... + 5872852.

Almost surely, 2^1421201023 is an apocalyptic number.

1421201023 is a deficient number, since it is larger than the sum of its proper divisors (140945689).

1421201023 is a wasteful number, since it uses less digits than its factorization.

1421201023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11745485 (or 11745474 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1421201023 is about 37698.8199152175. The cubic root of 1421201023 is about 1124.3076623772.

Adding to 1421201023 its reverse (3201021241), we get a palindrome (4622222264).

The spelling of 1421201023 in words is "one billion, four hundred twenty-one million, two hundred one thousand, twenty-three".