1201324542 has 24 divisors (see below), whose sum is σ = 2640929928. Its totient is φ = 364037520.

The previous prime is 1201324519. The next prime is 1201324543. The reversal of 1201324542 is 2454231021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201324543) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 826633 + ... + 828084.

It is an arithmetic number, because the mean of its divisors is an integer number (110038747).

Almost surely, 2^1201324542 is an apocalyptic number.

1201324542 is an abundant number, since it is smaller than the sum of its proper divisors (1439605386).

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

1201324542 is a wasteful number, since it uses less digits than its factorization.

1201324542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1654744 (or 1654733 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 1201324542 is about 34660.1289957207. The cubic root of 1201324542 is about 1063.0494076136.

Adding to 1201324542 its reverse (2454231021), we get a palindrome (3655555563).

The spelling of 1201324542 in words is "one billion, two hundred one million, three hundred twenty-four thousand, five hundred forty-two".