201423142534 has 32 divisors (see below), whose sum is σ = 312006836736. Its totient is φ = 97463062080.

The previous prime is 201423142511. The next prime is 201423142577. The reversal of 201423142534 is 435241324102.

It is a junction number, because it is equal to n+sod(n) for n = 201423142496 and 201423142505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6653877 + ... + 6684079.

It is an arithmetic number, because the mean of its divisors is an integer number (9750213648).

Almost surely, 2^201423142534 is an apocalyptic number.

201423142534 is a deficient number, since it is larger than the sum of its proper divisors (110583694202).

201423142534 is a wasteful number, since it uses less digits than its factorization.

201423142534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30900.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 201423142534 its reverse (435241324102), we get a palindrome (636664466636).

The spelling of 201423142534 in words is "two hundred one billion, four hundred twenty-three million, one hundred forty-two thousand, five hundred thirty-four".