140102142 has 16 divisors (see below), whose sum is σ = 282344832. Its totient is φ = 46343960.

The previous prime is 140102141. The next prime is 140102189. The reversal of 140102142 is 241201041.

It is a super-2 number, since 2×140102142² = 39257220385976328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140102141) 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, 88338 + ... + 89909.

It is an arithmetic number, because the mean of its divisors is an integer number (17646552).

Almost surely, 2^140102142 is an apocalyptic number.

140102142 is an abundant number, since it is smaller than the sum of its proper divisors (142242690).

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

140102142 is a wasteful number, since it uses less digits than its factorization.

140102142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178383.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 140102142 is about 11836.4750665052. The cubic root of 140102142 is about 519.3756584710.

Adding to 140102142 its reverse (241201041), we get a palindrome (381303183).

The spelling of 140102142 in words is "one hundred forty million, one hundred two thousand, one hundred forty-two".