1200642464 has 48 divisors (see below), whose sum is σ = 2706576768. Its totient is φ = 513583872.

The previous prime is 1200642463. The next prime is 1200642497. The reversal of 1200642464 is 4642460021.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1200642463) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119957 + ... + 129579.

It is an arithmetic number, because the mean of its divisors is an integer number (56387016).

Almost surely, 2^1200642464 is an apocalyptic number.

1200642464 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1200642464 is an abundant number, since it is smaller than the sum of its proper divisors (1505934304).

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

1200642464 is an equidigital number, since it uses as much as digits as its factorization.

1200642464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10197 (or 10189 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 29.

The square root of 1200642464 is about 34650.2880796105. The cubic root of 1200642464 is about 1062.8481797580.

The spelling of 1200642464 in words is "one billion, two hundred million, six hundred forty-two thousand, four hundred sixty-four".