1201540412 has 24 divisors (see below), whose sum is σ = 2177128800. Its totient is φ = 579540416.

The previous prime is 1201540409. The next prime is 1201540421. The reversal of 1201540412 is 2140451021.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149078 + ... + 156930.

It is an arithmetic number, because the mean of its divisors is an integer number (90713700).

Almost surely, 2^1201540412 is an apocalyptic number.

It is an amenable number.

1201540412 is a deficient number, since it is larger than the sum of its proper divisors (975588388).

1201540412 is a wasteful number, since it uses less digits than its factorization.

1201540412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9205 (or 9203 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1201540412 is about 34663.2429527302. The cubic root of 1201540412 is about 1063.1130780939.

Adding to 1201540412 its reverse (2140451021), we get a palindrome (3341991433).

The spelling of 1201540412 in words is "one billion, two hundred one million, five hundred forty thousand, four hundred twelve".