1423155734 has 32 divisors (see below), whose sum is σ = 2866219776. Its totient is φ = 511823520.

The previous prime is 1423155709. The next prime is 1423155739. The reversal of 1423155734 is 4375513241.

It is a junction number, because it is equal to n+sod(n) for n = 1423155694 and 1423155703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423155739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 353432 + ... + 357435.

It is an arithmetic number, because the mean of its divisors is an integer number (89569368).

Almost surely, 2^1423155734 is an apocalyptic number.

1423155734 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1423155734 is an abundant number, since it is smaller than the sum of its proper divisors (1443064042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1423155734 is a wasteful number, since it uses less digits than its factorization.

1423155734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710900.

The product of its digits is 50400, while the sum is 35.

The square root of 1423155734 is about 37724.7363675348. The cubic root of 1423155734 is about 1124.8228814824.

Adding to 1423155734 its reverse (4375513241), we get a palindrome (5798668975).

The spelling of 1423155734 in words is "one billion, four hundred twenty-three million, one hundred fifty-five thousand, seven hundred thirty-four".