1201124542 has 4 divisors (see below), whose sum is σ = 1801686816. Its totient is φ = 600562270.

The previous prime is 1201124513. The next prime is 1201124557. The reversal of 1201124542 is 2454211021.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300281134 + ... + 300281137.

It is an arithmetic number, because the mean of its divisors is an integer number (450421704).

Almost surely, 2^1201124542 is an apocalyptic number.

1201124542 is a deficient number, since it is larger than the sum of its proper divisors (600562274).

1201124542 is an equidigital number, since it uses as much as digits as its factorization.

1201124542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600562273.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1201124542 is about 34657.2437161411. The cubic root of 1201124542 is about 1062.9904111549.

Adding to 1201124542 its reverse (2454211021), we get a palindrome (3655335563).

The spelling of 1201124542 in words is "one billion, two hundred one million, one hundred twenty-four thousand, five hundred forty-two".