154203420 has 96 divisors (see below), whose sum is σ = 506838528. Its totient is φ = 34290432.

The previous prime is 154203397. The next prime is 154203433. The reversal of 154203420 is 24302451.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10579 + ... + 20501.

It is an arithmetic number, because the mean of its divisors is an integer number (5279568).

Almost surely, 2^154203420 is an apocalyptic number.

154203420 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 154203420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (253419264).

154203420 is an abundant number, since it is smaller than the sum of its proper divisors (352635108).

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

154203420 is a wasteful number, since it uses less digits than its factorization.

154203420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9979 (or 9977 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 154203420 is about 12417.8669665929. The cubic root of 154203420 is about 536.2467444557.

Adding to 154203420 its reverse (24302451), we get a palindrome (178505871).

The spelling of 154203420 in words is "one hundred fifty-four million, two hundred three thousand, four hundred twenty".