142339154 has 4 divisors (see below), whose sum is σ = 213508734. Its totient is φ = 71169576.

The previous prime is 142339151. The next prime is 142339177. The reversal of 142339154 is 451933241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 72165025 + 70174129 = 8495^2 + 8377^2 .

It is a super-2 number, since 2×142339154² = 40520869522871432, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 142339154.

It is not an unprimeable number, because it can be changed into a prime (142339151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35584787 + ... + 35584790.

Almost surely, 2^142339154 is an apocalyptic number.

142339154 is a deficient number, since it is larger than the sum of its proper divisors (71169580).

142339154 is an equidigital number, since it uses as much as digits as its factorization.

142339154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71169579.

The product of its digits is 12960, while the sum is 32.

The square root of 142339154 is about 11930.5973865519. The cubic root of 142339154 is about 522.1253668539.

The spelling of 142339154 in words is "one hundred forty-two million, three hundred thirty-nine thousand, one hundred fifty-four".