201154210402 has 8 divisors (see below), whose sum is σ = 302391560556. Its totient is φ = 100357023552.

The previous prime is 201154210393. The next prime is 201154210409. The reversal of 201154210402 is 204012451102.

It can be written as a sum of positive squares in 2 ways, for example, as 200344864801 + 809345601 = 447599^2 + 28449^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (201154210409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110039683 + ... + 110041510.

Almost surely, 2^201154210402 is an apocalyptic number.

201154210402 is a deficient number, since it is larger than the sum of its proper divisors (101237350154).

201154210402 is a wasteful number, since it uses less digits than its factorization.

201154210402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220081652.

The product of its (nonzero) digits is 640, while the sum is 22.

Adding to 201154210402 its reverse (204012451102), we get a palindrome (405166661504).

The spelling of 201154210402 in words is "two hundred one billion, one hundred fifty-four million, two hundred ten thousand, four hundred two".