142420520000 has 280 divisors, whose sum is σ = 387695797632. Its totient is φ = 51462400000.

The previous prime is 142420519987. The next prime is 142420520009. The reversal of 142420520000 is 25024241.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (142420520009) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 76119065 + ... + 76120935.

Almost surely, 2^142420520000 is an apocalyptic number.

142420520000 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 142420520000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (193847898816).

142420520000 is an abundant number, since it is smaller than the sum of its proper divisors (245275277632).

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

142420520000 is a wasteful number, since it uses less digits than its factorization.

142420520000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2087 (or 2062 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

Adding to 142420520000 its reverse (25024241), we get a palindrome (142445544241).

The spelling of 142420520000 in words is "one hundred forty-two billion, four hundred twenty million, five hundred twenty thousand".