139870043 has 2 divisors, whose sum is σ = 139870044. Its totient is φ = 139870042.

The previous prime is 139870037. The next prime is 139870091. The reversal of 139870043 is 340078931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139870043 - 2¹⁰ = 139869019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 139869985 and 139870012.

It is not a weakly prime, because it can be changed into another prime (139890043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69935021 + 69935022.

It is an arithmetic number, because the mean of its divisors is an integer number (69935022).

Almost surely, 2^139870043 is an apocalyptic number.

139870043 is a deficient number, since it is larger than the sum of its proper divisors (1).

139870043 is an equidigital number, since it uses as much as digits as its factorization.

139870043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 139870043 is about 11826.6666055994. Note that the first 4 decimals coincide. The cubic root of 139870043 is about 519.0886935514.

The spelling of 139870043 in words is "one hundred thirty-nine million, eight hundred seventy thousand, forty-three".