1245502142040 has 192 divisors, whose sum is σ = 4057524692640. Its totient is φ = 305714872320.

The previous prime is 1245502142039. The next prime is 1245502142047. The reversal of 1245502142040 is 402412055421.

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 = 1245502141989 and 1245502142007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245502142047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7071850 + ... + 7245830.

Almost surely, 2^{1245502142040} is an apocalyptic number.

1245502142040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1245502142040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2028762346320).

1245502142040 is an abundant number, since it is smaller than the sum of its proper divisors (2812022550600).

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

1245502142040 is a wasteful number, since it uses less digits than its factorization.

1245502142040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174374 (or 174357 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

Adding to 1245502142040 its reverse (402412055421), we get a palindrome (1647914197461).

The spelling of 1245502142040 in words is "one trillion, two hundred forty-five billion, five hundred two million, one hundred forty-two thousand, forty".