20154324442 has 32 divisors (see below), whose sum is σ = 36377827200. Its totient is φ = 8180906688.

The previous prime is 20154324419. The next prime is 20154324457. The reversal of 20154324442 is 24442345102.

It is a super-2 number, since 2×20154324442² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1507684 + ... + 1520992.

It is an arithmetic number, because the mean of its divisors is an integer number (1136807100).

Almost surely, 2^20154324442 is an apocalyptic number.

20154324442 is a deficient number, since it is larger than the sum of its proper divisors (16223502758).

20154324442 is a wasteful number, since it uses less digits than its factorization.

20154324442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19030.

The product of its (nonzero) digits is 30720, while the sum is 31.

Adding to 20154324442 its reverse (24442345102), we get a palindrome (44596669544).

The spelling of 20154324442 in words is "twenty billion, one hundred fifty-four million, three hundred twenty-four thousand, four hundred forty-two".