1201345450 has 48 divisors (see below), whose sum is σ = 2258784000. Its totient is φ = 475352640.

The previous prime is 1201345391. The next prime is 1201345459. The reversal of 1201345450 is 545431021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (1201345459) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2736331 + ... + 2736769.

It is an arithmetic number, because the mean of its divisors is an integer number (47058000).

Almost surely, 2^1201345450 is an apocalyptic number.

1201345450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1201345450 is a deficient number, since it is larger than the sum of its proper divisors (1057438550).

1201345450 is a wasteful number, since it uses less digits than its factorization.

1201345450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 919 (or 914 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1201345450 is about 34660.4306089812. The cubic root of 1201345450 is about 1063.0555747253.

Adding to 1201345450 its reverse (545431021), we get a palindrome (1746776471).

The spelling of 1201345450 in words is "one billion, two hundred one million, three hundred forty-five thousand, four hundred fifty".