38142975 has 96 divisors (see below), whose sum is σ = 74995200. Its totient is φ = 16934400.

The previous prime is 38142971. The next prime is 38142977. The reversal of 38142975 is 57924183.

It is a Cunningham number, because it is equal to 6176²-1.

It is not a de Polignac number, because 38142975 - 2² = 38142971 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

Its product of digits (60480) is a multiple of the sum of its prime divisors (140).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38142971) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 537190 + ... + 537260.

It is an arithmetic number, because the mean of its divisors is an integer number (781200).

Almost surely, 2^38142975 is an apocalyptic number.

38142975 is a deficient number, since it is larger than the sum of its proper divisors (36852225).

38142975 is a wasteful number, since it uses less digits than its factorization.

38142975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 140 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 38142975 is about 6175.9999190415. Note that the first 4 decimals coincide. The cubic root of 38142975 is about 336.6186607149.

The spelling of 38142975 in words is "thirty-eight million, one hundred forty-two thousand, nine hundred seventy-five".