1240134432240 has 80 divisors (see below), whose sum is σ = 4193909179776. Its totient is φ = 300638649600.

The previous prime is 1240134432239. The next prime is 1240134432241. The reversal of 1240134432240 is 422344310421.

It is an interprime number because it is at equal distance from previous prime (1240134432239) and next prime (1240134432241).

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-3 number, since 3×1240134432240³ (a number of 37 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 1240134432198 and 1240134432207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240134432241) 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, 234871306 + ... + 234876585.

Almost surely, 2^{1240134432240} is an apocalyptic number.

1240134432240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1240134432240 is an abundant number, since it is smaller than the sum of its proper divisors (2953774747536).

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

1240134432240 is a wasteful number, since it uses less digits than its factorization.

1240134432240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469747918 (or 469747912 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

Adding to 1240134432240 its reverse (422344310421), we get a palindrome (1662478742661).

The spelling of 1240134432240 in words is "one trillion, two hundred forty billion, one hundred thirty-four million, four hundred thirty-two thousand, two hundred forty".