1401575023 has 4 divisors (see below), whose sum is σ = 1401653880. Its totient is φ = 1401496168.

The previous prime is 1401574997. The next prime is 1401575027. The reversal of 1401575023 is 3205751041.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1401575023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1401574982 and 1401575000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1401575027) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 1161 + ... + 52957.

It is an arithmetic number, because the mean of its divisors is an integer number (350413470).

Almost surely, 2^1401575023 is an apocalyptic number.

1401575023 is a deficient number, since it is larger than the sum of its proper divisors (78857).

1401575023 is an equidigital number, since it uses as much as digits as its factorization.

1401575023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78856.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 1401575023 is about 37437.6150816261. The cubic root of 1401575023 is about 1119.1082993389.

The spelling of 1401575023 in words is "one billion, four hundred one million, five hundred seventy-five thousand, twenty-three".