154445442 has 32 divisors (see below), whose sum is σ = 335047104. Its totient is φ = 47270400.

The previous prime is 154445429. The next prime is 154445449. The reversal of 154445442 is 244544451.

It is not an unprimeable number, because it can be changed into a prime (154445449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14284 + ... + 22647.

It is an arithmetic number, because the mean of its divisors is an integer number (10470222).

Almost surely, 2^154445442 is an apocalyptic number.

154445442 is an abundant number, since it is smaller than the sum of its proper divisors (180601662).

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

154445442 is a wasteful number, since it uses less digits than its factorization.

154445442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36994.

The product of its digits is 51200, while the sum is 33.

The square root of 154445442 is about 12427.6080562593. The cubic root of 154445442 is about 536.5271439228.

Adding to 154445442 its reverse (244544451), we get a palindrome (398989893).

Subtracting 154445442 from its reverse (244544451), we obtain a palindrome (90099009).

The spelling of 154445442 in words is "one hundred fifty-four million, four hundred forty-five thousand, four hundred forty-two".