38457142 has 4 divisors (see below), whose sum is σ = 57685716. Its totient is φ = 19228570.

The previous prime is 38457131. The next prime is 38457151. The reversal of 38457142 is 24175483.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24175483 = 73 ⋅331171.

It is a junction number, because it is equal to n+sod(n) for n = 38457098 and 38457107.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9614284 + ... + 9614287.

It is an arithmetic number, because the mean of its divisors is an integer number (14421429).

Almost surely, 2^38457142 is an apocalyptic number.

38457142 is a deficient number, since it is larger than the sum of its proper divisors (19228574).

38457142 is a wasteful number, since it uses less digits than its factorization.

38457142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19228573.

The product of its digits is 26880, while the sum is 34.

The square root of 38457142 is about 6201.3822652696. The cubic root of 38457142 is about 337.5403284228.

The spelling of 38457142 in words is "thirty-eight million, four hundred fifty-seven thousand, one hundred forty-two".