142421123002240 has 64 divisors (see below), whose sum is σ = 343599125760000. Its totient is φ = 56445802850304.

The previous prime is 142421123002189. The next prime is 142421123002247. The reversal of 142421123002240 is 42200321124241.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 142421123002199 and 142421123002208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142421123002247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1020723840 + ... + 1020863359.

It is an arithmetic number, because the mean of its divisors is an integer number (5368736340000).

Almost surely, 2^{142421123002240} is an apocalyptic number.

142421123002240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

142421123002240 is an abundant number, since it is smaller than the sum of its proper divisors (201178002757760).

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

142421123002240 is a wasteful number, since it uses less digits than its factorization.

142421123002240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041587327 (or 2041587315 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 142421123002240 its reverse (42200321124241), we get a palindrome (184621444126481).

The spelling of 142421123002240 in words is "one hundred forty-two trillion, four hundred twenty-one billion, one hundred twenty-three million, two thousand, two hundred forty".