1420155772 has 24 divisors (see below), whose sum is σ = 2860753280. Its totient is φ = 604257840.

The previous prime is 1420155761. The next prime is 1420155799. The reversal of 1420155772 is 2775510241.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178554 + ... + 186337.

Almost surely, 2^1420155772 is an apocalyptic number.

It is an amenable number.

1420155772 is an abundant number, since it is smaller than the sum of its proper divisors (1440597508).

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

1420155772 is a wasteful number, since it uses less digits than its factorization.

1420155772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365041 (or 365039 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 34.

The square root of 1420155772 is about 37684.9541859878. The cubic root of 1420155772 is about 1124.0319631830.

The spelling of 1420155772 in words is "one billion, four hundred twenty million, one hundred fifty-five thousand, seven hundred seventy-two".