142154049 has 8 divisors (see below), whose sum is σ = 190902880. Its totient is φ = 94087296.

The previous prime is 142154041. The next prime is 142154059. The reversal of 142154049 is 940451241.

142154049 is nontrivially palindromic in base 9.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 142154049 - 2³ = 142154041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142154041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170032 + ... + 170865.

It is an arithmetic number, because the mean of its divisors is an integer number (23862860).

Almost surely, 2^142154049 is an apocalyptic number.

It is an amenable number.

142154049 is a deficient number, since it is larger than the sum of its proper divisors (48748831).

142154049 is a wasteful number, since it uses less digits than its factorization.

142154049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341039.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 142154049 is about 11922.8372881626. The cubic root of 142154049 is about 521.8989359693.

The spelling of 142154049 in words is "one hundred forty-two million, one hundred fifty-four thousand, forty-nine".