42151853 has 2 divisors, whose sum is σ = 42151854. Its totient is φ = 42151852.

The previous prime is 42151849. The next prime is 42151867. The reversal of 42151853 is 35815124.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37429924 + 4721929 = 6118^2 + 2173^2 .

It is a cyclic number.

It is not a de Polignac number, because 42151853 - 2² = 42151849 is a prime.

It is a super-2 number, since 2×42151853² = 3553557422667218, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42151873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21075926 + 21075927.

It is an arithmetic number, because the mean of its divisors is an integer number (21075927).

Almost surely, 2^42151853 is an apocalyptic number.

It is an amenable number.

42151853 is a deficient number, since it is larger than the sum of its proper divisors (1).

42151853 is an equidigital number, since it uses as much as digits as its factorization.

42151853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4800, while the sum is 29.

The square root of 42151853 is about 6492.4458411295. The cubic root of 42151853 is about 348.0210852816.

Adding to 42151853 its reverse (35815124), we get a palindrome (77966977).

The spelling of 42151853 in words is "forty-two million, one hundred fifty-one thousand, eight hundred fifty-three".