53142940 has 24 divisors (see below), whose sum is σ = 112345632. Its totient is φ = 21115200.

The previous prime is 53142937. The next prime is 53142979. The reversal of 53142940 is 4924135.

It is a junction number, because it is equal to n+sod(n) for n = 53142899 and 53142908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5779 + ... + 11818.

It is an arithmetic number, because the mean of its divisors is an integer number (4681068).

Almost surely, 2^53142940 is an apocalyptic number.

It is an amenable number.

53142940 is an abundant number, since it is smaller than the sum of its proper divisors (59202692).

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

53142940 is a wasteful number, since it uses less digits than its factorization.

53142940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17757 (or 17755 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 53142940 is about 7289.9204385233. The cubic root of 53142940 is about 375.9659600239.

The spelling of 53142940 in words is "fifty-three million, one hundred forty-two thousand, nine hundred forty".