1201231420 has 12 divisors (see below), whose sum is σ = 2522586024. Its totient is φ = 480492560.

The previous prime is 1201231399. The next prime is 1201231439. The reversal of 1201231420 is 241321021.

It is a junction number, because it is equal to n+sod(n) for n = 1201231394 and 1201231403.

It is a congruent number.

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, 30030766 + ... + 30030805.

It is an arithmetic number, because the mean of its divisors is an integer number (210215502).

Almost surely, 2^1201231420 is an apocalyptic number.

1201231420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201231420 is an abundant number, since it is smaller than the sum of its proper divisors (1321354604).

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

1201231420 is a wasteful number, since it uses less digits than its factorization.

1201231420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60061580 (or 60061578 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1201231420 is about 34658.7856105779. The cubic root of 1201231420 is about 1063.0219390871.

Adding to 1201231420 its reverse (241321021), we get a palindrome (1442552441).

The spelling of 1201231420 in words is "one billion, two hundred one million, two hundred thirty-one thousand, four hundred twenty".