1201423519 has 8 divisors (see below), whose sum is σ = 1209014352. Its totient is φ = 1193843520.

The previous prime is 1201423501. The next prime is 1201423529. The reversal of 1201423519 is 9153241021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1201423519 - 2¹⁷ = 1201292447 is a prime.

It is a super-2 number, since 2×1201423519² = 2886836944012686722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201423529) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 388152 + ... + 391234.

It is an arithmetic number, because the mean of its divisors is an integer number (151126794).

Almost surely, 2^1201423519 is an apocalyptic number.

1201423519 is a deficient number, since it is larger than the sum of its proper divisors (7590833).

1201423519 is a wasteful number, since it uses less digits than its factorization.

1201423519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5417.

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

The square root of 1201423519 is about 34661.5567884652. The cubic root of 1201423519 is about 1063.0786016540.

The spelling of 1201423519 in words is "one billion, two hundred one million, four hundred twenty-three thousand, five hundred nineteen".