140042425 has 6 divisors (see below), whose sum is σ = 173652638. Its totient is φ = 112033920.

The previous prime is 140042411. The next prime is 140042453. The reversal of 140042425 is 524240041.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 896809 + 139145616 = 947^2 + 11796^2 .

It is not a de Polignac number, because 140042425 - 2⁷ = 140042297 is a prime.

It is a super-2 number, since 2×140042425² = 39223761599761250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140042396 and 140042405.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2800824 + ... + 2800873.

Almost surely, 2^140042425 is an apocalyptic number.

It is an amenable number.

140042425 is a deficient number, since it is larger than the sum of its proper divisors (33610213).

140042425 is an equidigital number, since it uses as much as digits as its factorization.

140042425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5601707 (or 5601702 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 140042425 is about 11833.9522138633. The cubic root of 140042425 is about 519.3018552599.

Adding to 140042425 its reverse (524240041), we get a palindrome (664282466).

The spelling of 140042425 in words is "one hundred forty million, forty-two thousand, four hundred twenty-five".