154021412 has 6 divisors (see below), whose sum is σ = 269537478. Its totient is φ = 77010704.

The previous prime is 154021393. The next prime is 154021451. The reversal of 154021412 is 214120451.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 152423716 + 1597696 = 12346^2 + 1264^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19252673 + ... + 19252680.

It is an arithmetic number, because the mean of its divisors is an integer number (44922913).

Almost surely, 2^154021412 is an apocalyptic number.

It is an amenable number.

154021412 is a deficient number, since it is larger than the sum of its proper divisors (115516066).

154021412 is a wasteful number, since it uses less digits than its factorization.

154021412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38505357 (or 38505355 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 154021412 is about 12410.5363300705. The cubic root of 154021412 is about 536.0356820754.

Adding to 154021412 its reverse (214120451), we get a palindrome (368141863).

The spelling of 154021412 in words is "one hundred fifty-four million, twenty-one thousand, four hundred twelve".