42693947 has 2 divisors, whose sum is σ = 42693948. Its totient is φ = 42693946.

The previous prime is 42693943. The next prime is 42694027. The reversal of 42693947 is 74939624.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42693947 - 2² = 42693943 is a prime.

It is a super-2 number, since 2×42693947² = 3645546220877618, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 42693898 and 42693907.

It is not a weakly prime, because it can be changed into another prime (42693943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21346973 + 21346974.

It is an arithmetic number, because the mean of its divisors is an integer number (21346974).

Almost surely, 2^42693947 is an apocalyptic number.

42693947 is a deficient number, since it is larger than the sum of its proper divisors (1).

42693947 is an equidigital number, since it uses as much as digits as its factorization.

42693947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 44.

The square root of 42693947 is about 6534.0605292574. The cubic root of 42693947 is about 349.5066436724.

The spelling of 42693947 in words is "forty-two million, six hundred ninety-three thousand, nine hundred forty-seven".