1240214146 has 8 divisors (see below), whose sum is σ = 1873900620. Its totient is φ = 615580608.

The previous prime is 1240214123. The next prime is 1240214147. The reversal of 1240214146 is 6414120421.

It can be written as a sum of positive squares in 2 ways, for example, as 1121513121 + 118701025 = 33489^2 + 10895^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1240214146² = 3076262255877018632, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1240214146.

It is not an unprimeable number, because it can be changed into a prime (1240214147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2262891 + ... + 2263438.

Almost surely, 2^1240214146 is an apocalyptic number.

1240214146 is a deficient number, since it is larger than the sum of its proper divisors (633686474).

1240214146 is a wasteful number, since it uses less digits than its factorization.

1240214146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4526468.

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 1240214146 is about 35216.6742609236. The cubic root of 1240214146 is about 1074.3989128556.

Adding to 1240214146 its reverse (6414120421), we get a palindrome (7654334567).

The spelling of 1240214146 in words is "one billion, two hundred forty million, two hundred fourteen thousand, one hundred forty-six".