1214155040 has 48 divisors (see below), whose sum is σ = 3278221632. Its totient is φ = 416281344.

The previous prime is 1214154989. The next prime is 1214155049. The reversal of 1214155040 is 405514121.

It is a super-2 number, since 2×1214155040² = 2948344922314803200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1214154997 and 1214155015.

It is not an unprimeable number, because it can be changed into a prime (1214155049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 540914 + ... + 543153.

It is an arithmetic number, because the mean of its divisors is an integer number (68296284).

Almost surely, 2^1214155040 is an apocalyptic number.

1214155040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1214155040 is an abundant number, since it is smaller than the sum of its proper divisors (2064066592).

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

1214155040 is a wasteful number, since it uses less digits than its factorization.

1214155040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1084089 (or 1084081 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1214155040 is about 34844.7275782148. The cubic root of 1214155040 is about 1066.8205732783.

Adding to 1214155040 its reverse (405514121), we get a palindrome (1619669161).

The spelling of 1214155040 in words is "one billion, two hundred fourteen million, one hundred fifty-five thousand, forty".