1203623421 has 96 divisors (see below), whose sum is σ = 2202224640. Its totient is φ = 568909440.

The previous prime is 1203623417. The next prime is 1203623461. The reversal of 1203623421 is 1243263021.

It is not a de Polignac number, because 1203623421 - 2² = 1203623417 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1203623391 and 1203623400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203623411) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2741520 + ... + 2741958.

It is an arithmetic number, because the mean of its divisors is an integer number (22939840).

Almost surely, 2^1203623421 is an apocalyptic number.

1203623421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1203623421 is a deficient number, since it is larger than the sum of its proper divisors (998601219).

1203623421 is a wasteful number, since it uses less digits than its factorization.

1203623421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567 (or 556 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 1203623421 is about 34693.2763082416. The cubic root of 1203623421 is about 1063.7270665031.

Adding to 1203623421 its reverse (1243263021), we get a palindrome (2446886442).

The spelling of 1203623421 in words is "one billion, two hundred three million, six hundred twenty-three thousand, four hundred twenty-one".