201240020434 has 8 divisors (see below), whose sum is σ = 302729945328. Its totient is φ = 100330038660.

The previous prime is 201240020411. The next prime is 201240020441. The reversal of 201240020434 is 434020042102.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144984912 + ... + 144986299.

It is an arithmetic number, because the mean of its divisors is an integer number (37841243166).

Almost surely, 2^201240020434 is an apocalyptic number.

201240020434 is a deficient number, since it is larger than the sum of its proper divisors (101489924894).

201240020434 is a wasteful number, since it uses less digits than its factorization.

201240020434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289971560.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 201240020434 its reverse (434020042102), we get a palindrome (635260062536).

The spelling of 201240020434 in words is "two hundred one billion, two hundred forty million, twenty thousand, four hundred thirty-four".