1201240434 has 64 divisors (see below), whose sum is σ = 2584866816. Its totient is φ = 370827264.

The previous prime is 1201240423. The next prime is 1201240457. The reversal of 1201240434 is 4340421021.

It is a self number, because there is not a number n which added to its sum of digits gives 1201240434.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3136207 + ... + 3136589.

It is an arithmetic number, because the mean of its divisors is an integer number (40388544).

Almost surely, 2^1201240434 is an apocalyptic number.

1201240434 is an abundant number, since it is smaller than the sum of its proper divisors (1383626382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1201240434 is a wasteful number, since it uses less digits than its factorization.

1201240434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1201240434 is about 34658.9156495122. The cubic root of 1201240434 is about 1063.0245980407.

Adding to 1201240434 its reverse (4340421021), we get a palindrome (5541661455).

The spelling of 1201240434 in words is "one billion, two hundred one million, two hundred forty thousand, four hundred thirty-four".