142120634 has 16 divisors (see below), whose sum is σ = 225502272. Its totient is φ = 67038048.

The previous prime is 142120609. The next prime is 142120669. The reversal of 142120634 is 436021241.

142120634 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17804 + ... + 24519.

It is an arithmetic number, because the mean of its divisors is an integer number (14093892).

Almost surely, 2^142120634 is an apocalyptic number.

142120634 is a deficient number, since it is larger than the sum of its proper divisors (83381638).

142120634 is a wasteful number, since it uses less digits than its factorization.

142120634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42421.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 142120634 is about 11921.4359034472. The cubic root of 142120634 is about 521.8580399140.

Adding to 142120634 its reverse (436021241), we get a palindrome (578141875).

The spelling of 142120634 in words is "one hundred forty-two million, one hundred twenty thousand, six hundred thirty-four".