142420356 has 189 divisors, whose sum is σ = 429840831. Its totient is φ = 41243904.

The previous prime is 142420349. The next prime is 142420357. The reversal of 142420356 is 653024241.

The square root of 142420356 is 11934.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 1285956 + 141134400 = 1134^2 + 11880^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (142420357) by changing a digit.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 8377660 + ... + 8377676.

Almost surely, 2^142420356 is an apocalyptic number.

142420356 is the 11934-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 142420356

142420356 is an abundant number, since it is smaller than the sum of its proper divisors (287420475).

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

142420356 is a wasteful number, since it uses less digits than its factorization.

142420356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82 (or 35 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The cubic root of 142420356 is about 522.2246357785.

Adding to 142420356 its reverse (653024241), we get a palindrome (795444597).

The spelling of 142420356 in words is "one hundred forty-two million, four hundred twenty thousand, three hundred fifty-six".