1540135201 has 4 divisors (see below), whose sum is σ = 1680147504. Its totient is φ = 1400122900.

The previous prime is 1540135169. The next prime is 1540135237. The reversal of 1540135201 is 1025310451.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1540135201 - 2⁵ = 1540135169 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1540135241) 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, 70006135 + ... + 70006156.

It is an arithmetic number, because the mean of its divisors is an integer number (420036876).

Almost surely, 2^1540135201 is an apocalyptic number.

1540135201 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1540135201 is a deficient number, since it is larger than the sum of its proper divisors (140012303).

1540135201 is a wasteful number, since it uses less digits than its factorization.

1540135201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140012302.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1540135201 is about 39244.5563231386. The cubic root of 1540135201 is about 1154.8341437100.

Adding to 1540135201 its reverse (1025310451), we get a palindrome (2565445652).

The spelling of 1540135201 in words is "one billion, five hundred forty million, one hundred thirty-five thousand, two hundred one".