154402040 has 64 divisors (see below), whose sum is σ = 375883200. Its totient is φ = 56742912.

The previous prime is 154401991. The next prime is 154402051. The reversal of 154402040 is 40204451.

154402040 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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, 136196 + ... + 137324.

It is an arithmetic number, because the mean of its divisors is an integer number (5873175).

Almost surely, 2^154402040 is an apocalyptic number.

154402040 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 154402040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187941600).

154402040 is an abundant number, since it is smaller than the sum of its proper divisors (221481160).

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

154402040 is a wasteful number, since it uses less digits than its factorization.

154402040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1416 (or 1412 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 154402040 is about 12425.8617407406. The cubic root of 154402040 is about 536.4768812271.

Adding to 154402040 its reverse (40204451), we get a palindrome (194606491).

The spelling of 154402040 in words is "one hundred fifty-four million, four hundred two thousand, forty".