156140029 has 2 divisors, whose sum is σ = 156140030. Its totient is φ = 156140028.

The previous prime is 156140021. The next prime is 156140051. The reversal of 156140029 is 920041651.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153884025 + 2256004 = 12405^2 + 1502^2 .

It is a cyclic number.

It is not a de Polignac number, because 156140029 - 2³ = 156140021 is a prime.

It is a super-2 number, since 2×156140029² = 48759417312241682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 156139979 and 156140006.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (156140021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78070014 + 78070015.

It is an arithmetic number, because the mean of its divisors is an integer number (78070015).

Almost surely, 2^156140029 is an apocalyptic number.

It is an amenable number.

156140029 is a deficient number, since it is larger than the sum of its proper divisors (1).

156140029 is an equidigital number, since it uses as much as digits as its factorization.

156140029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 156140029 is about 12495.6003857358. The cubic root of 156140029 is about 538.4822826718.

It can be divided in two parts, 156 and 140029, that added together give a triangular number (140185 = T₅₂₉).

The spelling of 156140029 in words is "one hundred fifty-six million, one hundred forty thousand, twenty-nine".