142120542 has 16 divisors (see below), whose sum is σ = 296599680. Its totient is φ = 45313752.

The previous prime is 142120541. The next prime is 142120549. The reversal of 142120542 is 245021241.

142120542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142120541) 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, 514792 + ... + 515067.

It is an arithmetic number, because the mean of its divisors is an integer number (18537480).

Almost surely, 2^142120542 is an apocalyptic number.

142120542 is an abundant number, since it is smaller than the sum of its proper divisors (154479138).

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

142120542 is a wasteful number, since it uses less digits than its factorization.

142120542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1029887.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 142120542 is about 11921.4320448510. The cubic root of 142120542 is about 521.8579273079.

Adding to 142120542 its reverse (245021241), we get a palindrome (387141783).

The spelling of 142120542 in words is "one hundred forty-two million, one hundred twenty thousand, five hundred forty-two".