1245440022 has 16 divisors (see below), whose sum is σ = 2491394160. Its totient is φ = 415060992.

The previous prime is 1245439991. The next prime is 1245440029. The reversal of 1245440022 is 2200445421.

It is a happy number.

It is a super-2 number, since 2×1245440022² = 3102241696798720968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1245439974 and 1245440001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245440029) 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, 14778 + ... + 52050.

It is an arithmetic number, because the mean of its divisors is an integer number (155712135).

Almost surely, 2^1245440022 is an apocalyptic number.

1245440022 is an abundant number, since it is smaller than the sum of its proper divisors (1245954138).

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

1245440022 is a wasteful number, since it uses less digits than its factorization.

1245440022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42847.

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 1245440022 is about 35290.7923118765. The cubic root of 1245440022 is about 1075.9058589896.

Adding to 1245440022 its reverse (2200445421), we get a palindrome (3445885443).

The spelling of 1245440022 in words is "one billion, two hundred forty-five million, four hundred forty thousand, twenty-two".