1245221470 has 16 divisors (see below), whose sum is σ = 2242812240. Its totient is φ = 497774464.

The previous prime is 1245221447. The next prime is 1245221489. The reversal of 1245221470 is 741225421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22267 + ... + 54646.

It is an arithmetic number, because the mean of its divisors is an integer number (140175765).

Almost surely, 2^1245221470 is an apocalyptic number.

1245221470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1245221470 is a deficient number, since it is larger than the sum of its proper divisors (997590770).

1245221470 is a wasteful number, since it uses less digits than its factorization.

1245221470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78539.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 1245221470 is about 35287.6957309485. The cubic root of 1245221470 is about 1075.8429213588.

Adding to 1245221470 its reverse (741225421), we get a palindrome (1986446891).

The spelling of 1245221470 in words is "one billion, two hundred forty-five million, two hundred twenty-one thousand, four hundred seventy".