142669387 has 8 divisors (see below), whose sum is σ = 164335616. Its totient is φ = 121324392.

The previous prime is 142669361. The next prime is 142669427. The reversal of 142669387 is 783966241.

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

It is not a de Polignac number, because 142669387 - 2⁷ = 142669259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142669327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79353 + ... + 81130.

It is an arithmetic number, because the mean of its divisors is an integer number (20541952).

Almost surely, 2^142669387 is an apocalyptic number.

142669387 is a deficient number, since it is larger than the sum of its proper divisors (21666229).

142669387 is a wasteful number, since it uses less digits than its factorization.

142669387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160617.

The product of its digits is 435456, while the sum is 46.

The square root of 142669387 is about 11944.4291198868. The cubic root of 142669387 is about 522.5288394756.

It can be divided in two parts, 14266 and 9387, that added together give a triangular number (23653 = T₂₁₇).

The spelling of 142669387 in words is "one hundred forty-two million, six hundred sixty-nine thousand, three hundred eighty-seven".