1201203456 has 36 divisors (see below), whose sum is σ = 3196954992. Its totient is φ = 400400896.

The previous prime is 1201203449. The next prime is 1201203491. The reversal of 1201203456 is 6543021021.

It is a super-3 number, since 3×1201203456³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 781266 + ... + 782801.

Almost surely, 2^1201203456 is an apocalyptic number.

1201203456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1201203456 is an abundant number, since it is smaller than the sum of its proper divisors (1995751536).

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

1201203456 is an equidigital number, since it uses as much as digits as its factorization.

1201203456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1564086 (or 1564072 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1201203456 is about 34658.3821895945. The cubic root of 1201203456 is about 1063.0136901698.

Adding to 1201203456 its reverse (6543021021), we get a palindrome (7744224477).

It can be divided in two parts, 120 and 1203456, that added together give a triangular number (1203576 = T₁₅₅₁).

The spelling of 1201203456 in words is "one billion, two hundred one million, two hundred three thousand, four hundred fifty-six".