142472254 has 4 divisors (see below), whose sum is σ = 213708384. Its totient is φ = 71236126.

The previous prime is 142472251. The next prime is 142472261. The reversal of 142472254 is 452274241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 452274241 = 1531 ⋅295411.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142472251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35618062 + ... + 35618065.

It is an arithmetic number, because the mean of its divisors is an integer number (53427096).

Almost surely, 2^142472254 is an apocalyptic number.

142472254 is a deficient number, since it is larger than the sum of its proper divisors (71236130).

142472254 is an equidigital number, since it uses as much as digits as its factorization.

142472254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71236129.

The product of its digits is 17920, while the sum is 31.

The square root of 142472254 is about 11936.1741776836. The cubic root of 142472254 is about 522.2880609880.

The spelling of 142472254 in words is "one hundred forty-two million, four hundred seventy-two thousand, two hundred fifty-four".