140102420 has 12 divisors (see below), whose sum is σ = 294215124. Its totient is φ = 56040960.

The previous prime is 140102419. The next prime is 140102477. The reversal of 140102420 is 24201041.

It can be written as a sum of positive squares in 2 ways, for example, as 66520336 + 73582084 = 8156^2 + 8578^2 .

It is a junction number, because it is equal to n+sod(n) for n = 140102395 and 140102404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3502541 + ... + 3502580.

It is an arithmetic number, because the mean of its divisors is an integer number (24517927).

Almost surely, 2^140102420 is an apocalyptic number.

140102420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

140102420 is an abundant number, since it is smaller than the sum of its proper divisors (154112704).

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

140102420 is a wasteful number, since it uses less digits than its factorization.

140102420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7005130 (or 7005128 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 140102420 is about 11836.4868098604. The cubic root of 140102420 is about 519.3760019974.

Adding to 140102420 its reverse (24201041), we get a palindrome (164303461).

The spelling of 140102420 in words is "one hundred forty million, one hundred two thousand, four hundred twenty".