154101220 has 96 divisors (see below), whose sum is σ = 401119488. Its totient is φ = 48425472.

The previous prime is 154101197. The next prime is 154101221. The reversal of 154101220 is 22101451.

It is a junction number, because it is equal to n+sod(n) for n = 154101194 and 154101203.

It is not an unprimeable number, because it can be changed into a prime (154101221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 412954 + ... + 413326.

It is an arithmetic number, because the mean of its divisors is an integer number (4178328).

Almost surely, 2^154101220 is an apocalyptic number.

154101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 154101220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200559744).

154101220 is an abundant number, since it is smaller than the sum of its proper divisors (247018268).

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

154101220 is a wasteful number, since it uses less digits than its factorization.

154101220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629 (or 627 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 154101220 is about 12413.7512460980. The cubic root of 154101220 is about 536.1282504794.

Adding to 154101220 its reverse (22101451), we get a palindrome (176202671).

The spelling of 154101220 in words is "one hundred fifty-four million, one hundred one thousand, two hundred twenty".