142169436 has 36 divisors (see below), whose sum is σ = 380513952. Its totient is φ = 44601984.

The previous prime is 142169431. The next prime is 142169473. The reversal of 142169436 is 634961241.

142169436 is a `hidden beast` number, since 1 + 4 + 216 + 9 + 436 = 666.

142169436 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 142169436.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142169431) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115540 + ... + 116763.

It is an arithmetic number, because the mean of its divisors is an integer number (10569832).

Almost surely, 2^142169436 is an apocalyptic number.

It is an amenable number.

142169436 is an abundant number, since it is smaller than the sum of its proper divisors (238344516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142169436 is a wasteful number, since it uses less digits than its factorization.

142169436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232330 (or 232325 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 142169436 is about 11923.4825449614. The cubic root of 142169436 is about 521.9177657043.

The spelling of 142169436 in words is "one hundred forty-two million, one hundred sixty-nine thousand, four hundred thirty-six".