1203420523 has 4 divisors (see below), whose sum is σ = 1235945440. Its totient is φ = 1170895608.

The previous prime is 1203420481. The next prime is 1203420539. The reversal of 1203420523 is 3250243021.

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

It is a cyclic number.

It is not a de Polignac number, because 1203420523 - 2²¹ = 1201323371 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1203420494 and 1203420503.

It is not an unprimeable number, because it can be changed into a prime (1203420553) 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, 16262403 + ... + 16262476.

It is an arithmetic number, because the mean of its divisors is an integer number (308986360).

Almost surely, 2^1203420523 is an apocalyptic number.

1203420523 is a deficient number, since it is larger than the sum of its proper divisors (32524917).

1203420523 is an equidigital number, since it uses as much as digits as its factorization.

1203420523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32524916.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 1203420523 is about 34690.3520160865. The cubic root of 1203420523 is about 1063.6672913776.

Adding to 1203420523 its reverse (3250243021), we get a palindrome (4453663544).

The spelling of 1203420523 in words is "one billion, two hundred three million, four hundred twenty thousand, five hundred twenty-three".