3420156137 has 4 divisors (see below), whose sum is σ = 3425492436. Its totient is φ = 3414819840.

The previous prime is 3420156133. The next prime is 3420156149. The reversal of 3420156137 is 7316510243.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2144523481 + 1275632656 = 46309^2 + 35716^2 .

It is a cyclic number.

It is not a de Polignac number, because 3420156137 - 2² = 3420156133 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3420156133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2667188 + ... + 2668469.

It is an arithmetic number, because the mean of its divisors is an integer number (856373109).

Almost surely, 2^3420156137 is an apocalyptic number.

It is an amenable number.

3420156137 is a deficient number, since it is larger than the sum of its proper divisors (5336299).

3420156137 is an equidigital number, since it uses as much as digits as its factorization.

3420156137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5336298.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 3420156137 is about 58482.1009968007. The cubic root of 3420156137 is about 1506.6601822876.

The spelling of 3420156137 in words is "three billion, four hundred twenty million, one hundred fifty-six thousand, one hundred thirty-seven".