1101020429 has 4 divisors (see below), whose sum is σ = 1102686780. Its totient is φ = 1099354080.

The previous prime is 1101020423. The next prime is 1101020509. The reversal of 1101020429 is 9240201011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9240201011 = 19 ⋅486326369.

It can be written as a sum of positive squares in 2 ways, for example, as 975625225 + 125395204 = 31235^2 + 11198^2 .

It is a cyclic number.

It is not a de Polignac number, because 1101020429 - 2⁴ = 1101020413 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1101020429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101020423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 832184 + ... + 833505.

It is an arithmetic number, because the mean of its divisors is an integer number (275671695).

Almost surely, 2^1101020429 is an apocalyptic number.

It is an amenable number.

1101020429 is a deficient number, since it is larger than the sum of its proper divisors (1666351).

1101020429 is an equidigital number, since it uses as much as digits as its factorization.

1101020429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666350.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1101020429 is about 33181.6278835141. The cubic root of 1101020429 is about 1032.5992193988.

The spelling of 1101020429 in words is "one billion, one hundred one million, twenty thousand, four hundred twenty-nine".