1214054440 has 16 divisors (see below), whose sum is σ = 2731622580. Its totient is φ = 485621760.

The previous prime is 1214054437. The next prime is 1214054449. The reversal of 1214054440 is 444504121.

It can be written as a sum of positive squares in 2 ways, for example, as 1144198276 + 69856164 = 33826^2 + 8358^2 .

It is not an unprimeable number, because it can be changed into a prime (1214054449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15175641 + ... + 15175720.

Almost surely, 2^1214054440 is an apocalyptic number.

1214054440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1214054440 is an abundant number, since it is smaller than the sum of its proper divisors (1517568140).

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

1214054440 is a wasteful number, since it uses less digits than its factorization.

1214054440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30351372 (or 30351368 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 1214054440 is about 34843.2840013682. The cubic root of 1214054440 is about 1066.7911083114.

Adding to 1214054440 its reverse (444504121), we get a palindrome (1658558561).

The spelling of 1214054440 in words is "one billion, two hundred fourteen million, fifty-four thousand, four hundred forty".