20101242534 has 16 divisors (see below), whose sum is σ = 40883883840. Its totient is φ = 6586847720.

The previous prime is 20101242533. The next prime is 20101242583. The reversal of 20101242534 is 43524210102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20101242533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28391232 + ... + 28391939.

It is an arithmetic number, because the mean of its divisors is an integer number (2555242740).

Almost surely, 2^20101242534 is an apocalyptic number.

20101242534 is an abundant number, since it is smaller than the sum of its proper divisors (20782641306).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20101242534 is a wasteful number, since it uses less digits than its factorization.

20101242534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56783235.

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 20101242534 its reverse (43524210102), we get a palindrome (63625452636).

The spelling of 20101242534 in words is "twenty billion, one hundred one million, two hundred forty-two thousand, five hundred thirty-four".