1201525126 has 4 divisors (see below), whose sum is σ = 1802287692. Its totient is φ = 600762562.

The previous prime is 1201525111. The next prime is 1201525139. The reversal of 1201525126 is 6215251021.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1201525126.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300381280 + ... + 300381283.

It is an arithmetic number, because the mean of its divisors is an integer number (450571923).

Almost surely, 2^1201525126 is an apocalyptic number.

1201525126 is a deficient number, since it is larger than the sum of its proper divisors (600762566).

1201525126 is an equidigital number, since it uses as much as digits as its factorization.

1201525126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600762565.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 1201525126 is about 34663.0224590990. The cubic root of 1201525126 is about 1063.1085697657.

Adding to 1201525126 its reverse (6215251021), we get a palindrome (7416776147).

The spelling of 1201525126 in words is "one billion, two hundred one million, five hundred twenty-five thousand, one hundred twenty-six".