142229421 has 12 divisors (see below), whose sum is σ = 216255520. Its totient is φ = 89829000.

The previous prime is 142229411. The next prime is 142229431. The reversal of 142229421 is 124922241.

142229421 is a `hidden beast` number, since 14 + 2 + 229 + 421 = 666.

It is an interprime number because it is at equal distance from previous prime (142229411) and next prime (142229431).

It is not a de Polignac number, because 142229421 - 2⁵ = 142229389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142229411) 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 in 11 ways as a sum of consecutive naturals, for example, 415705 + ... + 416046.

Almost surely, 2^142229421 is an apocalyptic number.

It is an amenable number.

142229421 is a deficient number, since it is larger than the sum of its proper divisors (74026099).

142229421 is a wasteful number, since it uses less digits than its factorization.

142229421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831776 (or 831773 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 142229421 is about 11925.9976941135. The cubic root of 142229421 is about 521.9911589642.

The spelling of 142229421 in words is "one hundred forty-two million, two hundred twenty-nine thousand, four hundred twenty-one".