142198742 has 32 divisors (see below), whose sum is σ = 260596224. Its totient is φ = 56865600.

The previous prime is 142198741. The next prime is 142198751. The reversal of 142198742 is 247891241.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 142198696 and 142198705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142198741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7817 + ... + 18587.

It is an arithmetic number, because the mean of its divisors is an integer number (8143632).

Almost surely, 2^142198742 is an apocalyptic number.

142198742 is a deficient number, since it is larger than the sum of its proper divisors (118397482).

142198742 is a wasteful number, since it uses less digits than its factorization.

142198742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10844.

The product of its digits is 32256, while the sum is 38.

The square root of 142198742 is about 11924.7114011199. The cubic root of 142198742 is about 521.9536249617.

The spelling of 142198742 in words is "one hundred forty-two million, one hundred ninety-eight thousand, seven hundred forty-two".