154642212 has 18 divisors (see below), whose sum is σ = 390901238. Its totient is φ = 51547392.

The previous prime is 154642199. The next prime is 154642247. The reversal of 154642212 is 212246451.

154642212 is a `hidden beast` number, since 1 + 5 + 4 + 642 + 2 + 12 = 666.

154642212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 146313216 + 8328996 = 12096^2 + 2886^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2147773 + ... + 2147844.

Almost surely, 2^154642212 is an apocalyptic number.

154642212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

154642212 is an abundant number, since it is smaller than the sum of its proper divisors (236259026).

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

154642212 is a wasteful number, since it uses less digits than its factorization.

154642212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4295627 (or 4295622 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 154642212 is about 12435.5221844521. The cubic root of 154642212 is about 536.7548999551.

Adding to 154642212 its reverse (212246451), we get a palindrome (366888663).

The spelling of 154642212 in words is "one hundred fifty-four million, six hundred forty-two thousand, two hundred twelve".