140742424 has 16 divisors (see below), whose sum is σ = 277781400. Its totient is φ = 66667392.

The previous prime is 140742403. The next prime is 140742431. The reversal of 140742424 is 424247041.

140742424 = T₉₆₈₅ + T₉₆₈₆ + T₉₆₈₇.

It is a junction number, because it is equal to n+sod(n) for n = 140742392 and 140742401.

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, 462817 + ... + 463120.

Almost surely, 2^140742424 is an apocalyptic number.

140742424 is the 9687-th centered triangular number.

It is an amenable number.

140742424 is a deficient number, since it is larger than the sum of its proper divisors (137038976).

140742424 is a wasteful number, since it uses less digits than its factorization.

140742424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925962 (or 925958 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 28.

The square root of 140742424 is about 11863.4912230759. The cubic root of 140742424 is about 520.1656572798.

Adding to 140742424 its reverse (424247041), we get a palindrome (564989465).

The spelling of 140742424 in words is "one hundred forty million, seven hundred forty-two thousand, four hundred twenty-four".