1321410240 has 112 divisors (see below), whose sum is σ = 4661672160. Its totient is φ = 352373760.

The previous prime is 1321410239. The next prime is 1321410241. The reversal of 1321410240 is 420141231.

1321410240 is a `hidden beast` number, since 13 + 2 + 1 + 410 + 240 = 666.

It is an interprime number because it is at equal distance from previous prime (1321410239) and next prime (1321410241).

It is a super-2 number, since 2×1321410240² = 3492250044753715200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1321410241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67831 + ... + 85110.

Almost surely, 2^1321410240 is an apocalyptic number.

1321410240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321410240 is an abundant number, since it is smaller than the sum of its proper divisors (3340261920).

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

1321410240 is a wasteful number, since it uses less digits than its factorization.

1321410240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152967 (or 152951 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 1321410240 is about 36351.2068575446. The cubic root of 1321410240 is about 1097.3518226414.

Adding to 1321410240 its reverse (420141231), we get a palindrome (1741551471).

The spelling of 1321410240 in words is "one billion, three hundred twenty-one million, four hundred ten thousand, two hundred forty".