1215146123 has 8 divisors (see below), whose sum is σ = 1236480000. Its totient is φ = 1193836968.

The previous prime is 1215146113. The next prime is 1215146129. The reversal of 1215146123 is 3216415121.

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 1215146123 - 2⁶ = 1215146059 is a prime.

It is a super-2 number, since 2×1215146123² = 2953160200483862258, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1215146092 and 1215146101.

It is not an unprimeable number, because it can be changed into a prime (1215146129) 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, 112790 + ... + 123092.

It is an arithmetic number, because the mean of its divisors is an integer number (154560000).

Almost surely, 2^1215146123 is an apocalyptic number.

1215146123 is a deficient number, since it is larger than the sum of its proper divisors (21333877).

1215146123 is a wasteful number, since it uses less digits than its factorization.

1215146123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12361.

The product of its digits is 1440, while the sum is 26.

The square root of 1215146123 is about 34858.9460970925. The cubic root of 1215146123 is about 1067.1107669096.

The spelling of 1215146123 in words is "one billion, two hundred fifteen million, one hundred forty-six thousand, one hundred twenty-three".