154042220220 has 72 divisors (see below), whose sum is σ = 501737526864. Its totient is φ = 35209649664.

The previous prime is 154042220201. The next prime is 154042220341. The reversal of 154042220220 is 22022240451.

It is a super-2 number, since 2×154042220220² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26194717 + ... + 26200596.

It is an arithmetic number, because the mean of its divisors is an integer number (6968576762).

Almost surely, 2^154042220220 is an apocalyptic number.

154042220220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

154042220220 is an abundant number, since it is smaller than the sum of its proper divisors (347695306644).

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

154042220220 is a wasteful number, since it uses less digits than its factorization.

154042220220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52395339 (or 52395330 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

Adding to 154042220220 its reverse (22022240451), we get a palindrome (176064460671).

The spelling of 154042220220 in words is "one hundred fifty-four billion, forty-two million, two hundred twenty thousand, two hundred twenty".