1401620023 has 4 divisors (see below), whose sum is σ = 1462560048. Its totient is φ = 1340680000.

The previous prime is 1401620009. The next prime is 1401620047. The reversal of 1401620023 is 3200261041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1401620023 - 2⁹ = 1401619511 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 (1401620093) 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, 30469978 + ... + 30470023.

It is an arithmetic number, because the mean of its divisors is an integer number (365640012).

Almost surely, 2^1401620023 is an apocalyptic number.

1401620023 is a deficient number, since it is larger than the sum of its proper divisors (60940025).

1401620023 is an equidigital number, since it uses as much as digits as its factorization.

1401620023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60940024.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1401620023 is about 37438.2160766242. The cubic root of 1401620023 is about 1119.1202761825.

Adding to 1401620023 its reverse (3200261041), we get a palindrome (4601881064).

The spelling of 1401620023 in words is "one billion, four hundred one million, six hundred twenty thousand, twenty-three".