142691396 has 6 divisors (see below), whose sum is σ = 249709950. Its totient is φ = 71345696.

The previous prime is 142691377. The next prime is 142691399. The reversal of 142691396 is 693196241.

It can be written as a sum of positive squares in only one way, i.e., 130188100 + 12503296 = 11410^2 + 3536^2 .

It is not an unprimeable number, because it can be changed into a prime (142691399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17836421 + ... + 17836428.

It is an arithmetic number, because the mean of its divisors is an integer number (41618325).

Almost surely, 2^142691396 is an apocalyptic number.

It is an amenable number.

142691396 is a deficient number, since it is larger than the sum of its proper divisors (107018554).

142691396 is a wasteful number, since it uses less digits than its factorization.

142691396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35672853 (or 35672851 counting only the distinct ones).

The product of its digits is 69984, while the sum is 41.

The square root of 142691396 is about 11945.3503925167. The cubic root of 142691396 is about 522.5557075285. Note that the first 3 decimals are identical.

The spelling of 142691396 in words is "one hundred forty-two million, six hundred ninety-one thousand, three hundred ninety-six".