201242402 has 4 divisors (see below), whose sum is σ = 301863606. Its totient is φ = 100621200.

The previous prime is 201242401. The next prime is 201242407. The reversal of 201242402 is 204242102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 108139201 + 93103201 = 10399^2 + 9649^2 .

It is not an unprimeable number, because it can be changed into a prime (201242401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50310599 + ... + 50310602.

Almost surely, 2^201242402 is an apocalyptic number.

201242402 is a deficient number, since it is larger than the sum of its proper divisors (100621204).

201242402 is a wasteful number, since it uses less digits than its factorization.

201242402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100621203.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 201242402 is about 14185.9931622710. The cubic root of 201242402 is about 586.0119839753.

Adding to 201242402 its reverse (204242102), we get a palindrome (405484504).

The spelling of 201242402 in words is "two hundred one million, two hundred forty-two thousand, four hundred two".