242200154421 has 6 divisors (see below), whose sum is σ = 349844667510. Its totient is φ = 161466769608.

The previous prime is 242200154411. The next prime is 242200154423. The reversal of 242200154421 is 124451002242.

It is a happy number.

242200154421 is a `hidden beast` number, since 2 + 4 + 2 + 200 + 15 + 442 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 219122291025 + 23077863396 = 468105^2 + 151914^2 .

It is not a de Polignac number, because 242200154421 - 2⁵ = 242200154389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242200154423) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13455564126 + ... + 13455564143.

It is an arithmetic number, because the mean of its divisors is an integer number (58307444585).

Almost surely, 2^242200154421 is an apocalyptic number.

It is an amenable number.

242200154421 is a deficient number, since it is larger than the sum of its proper divisors (107644513089).

242200154421 is a wasteful number, since it uses less digits than its factorization.

242200154421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26911128275 (or 26911128272 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

Adding to 242200154421 its reverse (124451002242), we get a palindrome (366651156663).

The spelling of 242200154421 in words is "two hundred forty-two billion, two hundred million, one hundred fifty-four thousand, four hundred twenty-one".